20210012222100 has 72 divisors (see below), whose sum is σ = 58480613230368. Its totient is φ = 5388754915200.

The previous prime is 20210012222093. The next prime is 20210012222117. The reversal of 20210012222100 is 122221001202.

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 20210012222100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 847746 + ... + 6413945.

Almost surely, 2^{20210012222100} is an apocalyptic number.

20210012222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210012222100 is an abundant number, since it is smaller than the sum of its proper divisors (38270601008268).

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

20210012222100 is a wasteful number, since it uses less digits than its factorization.

20210012222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270985 (or 7270978 counting only the distinct ones).

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

Adding to 20210012222100 its reverse (122221001202), we get a palindrome (20332233223302).

The spelling of 20210012222100 in words is "twenty trillion, two hundred ten billion, twelve million, two hundred twenty-two thousand, one hundred".