100012112021220 has 96 divisors (see below), whose sum is σ = 325285295575296. Its totient is φ = 22485158668800.

The previous prime is 100012112021219. The next prime is 100012112021251. The reversal of 100012112021220 is 22120211210001.

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

It is a self number, because there is not a number n which added to its sum of digits gives 100012112021220.

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, 1951811071 + ... + 1951862310.

It is an arithmetic number, because the mean of its divisors is an integer number (3388388495576).

Almost surely, 2^{100012112021220} is an apocalyptic number.

100012112021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100012112021220 is an abundant number, since it is smaller than the sum of its proper divisors (225273183554076).

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

100012112021220 is a wasteful number, since it uses less digits than its factorization.

100012112021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903673461 (or 3903673459 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100012112021220 its reverse (22120211210001), we get a palindrome (122132323231221).

The spelling of 100012112021220 in words is "one hundred trillion, twelve billion, one hundred twelve million, twenty-one thousand, two hundred twenty".