102201020100120 has 128 divisors (see below), whose sum is σ = 317190899954880. Its totient is φ = 26325626880000.

The previous prime is 102201020100103. The next prime is 102201020100139. The reversal of 102201020100120 is 21001020102201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102201020100096 and 102201020100105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102337561 + ... + 103331400.

Almost surely, 2^{102201020100120} is an apocalyptic number.

102201020100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102201020100120 is an abundant number, since it is smaller than the sum of its proper divisors (214989879854760).

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

102201020100120 is a wasteful number, since it uses less digits than its factorization.

102201020100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205669117 (or 205669113 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102201020100120 its reverse (21001020102201), we get a palindrome (123202040202321).

The spelling of 102201020100120 in words is "one hundred two trillion, two hundred one billion, twenty million, one hundred thousand, one hundred twenty".