20012021022210 has 96 divisors (see below), whose sum is σ = 56364723286272. Its totient is φ = 4533696760320.

The previous prime is 20012021022199. The next prime is 20012021022269. The reversal of 20012021022210 is 1222012021002.

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 20012021022210.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60071146 + ... + 60403365.

It is an arithmetic number, because the mean of its divisors is an integer number (587132534232).

Almost surely, 2^{20012021022210} is an apocalyptic number.

20012021022210 is an abundant number, since it is smaller than the sum of its proper divisors (36352702264062).

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

20012021022210 is a wasteful number, since it uses less digits than its factorization.

20012021022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120474648 (or 120474641 counting only the distinct ones).

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

Adding to 20012021022210 its reverse (1222012021002), we get a palindrome (21234033043212).

The spelling of 20012021022210 in words is "twenty trillion, twelve billion, twenty-one million, twenty-two thousand, two hundred ten".