100020012122220 has 96 divisors (see below), whose sum is σ = 287490410887680. Its totient is φ = 25967956277760.

The previous prime is 100020012122201. The next prime is 100020012122231. The reversal of 100020012122220 is 22221210020001.

100020012122220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 100020012122220.

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, 61524705 + ... + 63129464.

It is an arithmetic number, because the mean of its divisors is an integer number (2994691780080).

Almost surely, 2^{100020012122220} is an apocalyptic number.

100020012122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020012122220 is an abundant number, since it is smaller than the sum of its proper divisors (187470398765460).

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

100020012122220 is a wasteful number, since it uses less digits than its factorization.

100020012122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124654535 (or 124654533 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100020012122220 its reverse (22221210020001), we get a palindrome (122241222142221).

The spelling of 100020012122220 in words is "one hundred trillion, twenty billion, twelve million, one hundred twenty-two thousand, two hundred twenty".