Search a number
-
+
121200031323030 = 2351122391381101159
BaseRepresentation
bin11011100011101100010100…
…110100000101001110010110
3120220010121110120102112001010
4123203230110310011032112
5111341220131004314110
61105434305320513050
734346261522136042
oct3343542464051626
9526117416375033
10121200031323030
1135688710004800
121171546531b786
1352821633608ca
1421d01817cd022
15e02a56e7c020
hex6e3b14d05396

121200031323030 has 192 divisors, whose sum is σ = 321301122508800. Its totient is φ = 29237413497600.

The previous prime is 121200031323023. The next prime is 121200031323053. The reversal of 121200031323030 is 30323130002121.

It is a junction number, because it is equal to n+sod(n) for n = 121200031322988 and 121200031323006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1198063591 + ... + 1198164749.

It is an arithmetic number, because the mean of its divisors is an integer number (1673443346400).

Almost surely, 2121200031323030 is an apocalyptic number.

121200031323030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121200031323030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160650561254400).

121200031323030 is an abundant number, since it is smaller than the sum of its proper divisors (200101091185770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121200031323030 is a wasteful number, since it uses less digits than its factorization.

121200031323030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102811 (or 102800 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 121200031323030 its reverse (30323130002121), we get a palindrome (151523161325151).

The spelling of 121200031323030 in words is "one hundred twenty-one trillion, two hundred billion, thirty-one million, three hundred twenty-three thousand, thirty".