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1220201103030 = 2357132375931567
BaseRepresentation
bin10001110000011001101…
…001110011111010110110
311022122112220122110201120
4101300121221303322312
5124442432440244110
62332315212204410
7154104502150110
oct21603151637266
94278486573646
101220201103030
11430536791868
12178596a69706
138b0ab844a00
14430b53dc3b0
1521b1842c870
hex11c19a73eb6

1220201103030 has 384 divisors, whose sum is σ = 3730694381568. Its totient is φ = 249908944896.

The previous prime is 1220201103001. The next prime is 1220201103061. The reversal of 1220201103030 is 303011020221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 778685307 + ... + 778686873.

It is an arithmetic number, because the mean of its divisors is an integer number (9715349952).

Almost surely, 21220201103030 is an apocalyptic number.

1220201103030 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 1220201103030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865347190784).

1220201103030 is an abundant number, since it is smaller than the sum of its proper divisors (2510493278538).

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

1220201103030 is a wasteful number, since it uses less digits than its factorization.

1220201103030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1220201103030 its reverse (303011020221), we get a palindrome (1523212123251).

It can be divided in two parts, 1220201 and 103030, that added together give a palindrome (1323231).

The spelling of 1220201103030 in words is "one trillion, two hundred twenty billion, two hundred one million, one hundred three thousand, thirty".