100111210020120 has 128 divisors (see below), whose sum is σ = 323456591989440. Its totient is φ = 24641207009280.

The previous prime is 100111210020103. The next prime is 100111210020161. The reversal of 100111210020120 is 21020012111001.

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 = 100111210020096 and 100111210020105.

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, 22848360 + ... + 26875080.

Almost surely, 2^{100111210020120} is an apocalyptic number.

100111210020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111210020120 is an abundant number, since it is smaller than the sum of its proper divisors (223345381969320).

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

100111210020120 is a wasteful number, since it uses less digits than its factorization.

100111210020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042685 (or 4042681 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100111210020120 its reverse (21020012111001), we get a palindrome (121131222131121).

The spelling of 100111210020120 in words is "one hundred trillion, one hundred eleven billion, two hundred ten million, twenty thousand, one hundred twenty".