20212101012210 has 64 divisors (see below), whose sum is σ = 50043506752512. Its totient is φ = 5220704054016.

The previous prime is 20212101012157. The next prime is 20212101012251. The reversal of 20212101012210 is 1221010121202.

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 20212101012210.

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, 40580049 + ... + 41075108.

It is an arithmetic number, because the mean of its divisors is an integer number (781929793008).

Almost surely, 2^{20212101012210} is an apocalyptic number.

20212101012210 is an abundant number, since it is smaller than the sum of its proper divisors (29831405740302).

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

20212101012210 is a wasteful number, since it uses less digits than its factorization.

20212101012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81655427.

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

Adding to 20212101012210 its reverse (1221010121202), we get a palindrome (21433111133412).

The spelling of 20212101012210 in words is "twenty trillion, two hundred twelve billion, one hundred one million, twelve thousand, two hundred ten".