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120102212021 = 1171153780041
BaseRepresentation
bin110111111011010100…
…1100101000110110101
3102111000010111112000212
41233312221211012311
53431432131241041
6131101343115205
711451146646431
oct1576651450665
9374003445025
10120102212021
1146a31627570
121b339ba2b05
13b43042395c
145b54b519c1
1531cde458eb
hex1bf6a651b5

120102212021 has 8 divisors (see below), whose sum is σ = 132865956288. Its totient is φ = 107646028000.

The previous prime is 120102211997. The next prime is 120102212029. The reversal of 120102212021 is 120212201021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120102212021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120102211987 and 120102212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102212029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76889240 + ... + 76890801.

It is an arithmetic number, because the mean of its divisors is an integer number (16608244536).

Almost surely, 2120102212021 is an apocalyptic number.

120102212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120102212021 is a deficient number, since it is larger than the sum of its proper divisors (12763744267).

120102212021 is a wasteful number, since it uses less digits than its factorization.

120102212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153780123.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120102212021 its reverse (120212201021), we get a palindrome (240314413042).

The spelling of 120102212021 in words is "one hundred twenty billion, one hundred two million, two hundred twelve thousand, twenty-one".

Divisors: 1 11 71 781 153780041 1691580451 10918382911 120102212021