20021322131202 has 64 divisors (see below), whose sum is σ = 47887996262400. Its totient is φ = 5456165113344.

The previous prime is 20021322131191. The next prime is 20021322131221. The reversal of 20021322131202 is 20213122312002.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 29015952 + ... + 29697947.

It is an arithmetic number, because the mean of its divisors is an integer number (748249941600).

Almost surely, 2^{20021322131202} is an apocalyptic number.

20021322131202 is an abundant number, since it is smaller than the sum of its proper divisors (27866674131198).

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

20021322131202 is a wasteful number, since it uses less digits than its factorization.

20021322131202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58714287.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20021322131202 its reverse (20213122312002), we get a palindrome (40234444443204).

It can be divided in two parts, 20021 and 322131202, that added together give a palindrome (322151223).

The spelling of 20021322131202 in words is "twenty trillion, twenty-one billion, three hundred twenty-two million, one hundred thirty-one thousand, two hundred two".