20012221002102 has 16 divisors (see below), whose sum is σ = 45742219433472. Its totient is φ = 5717777429160.

The previous prime is 20012221002079. The next prime is 20012221002133. The reversal of 20012221002102 is 20120012221002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238240726174 + ... + 238240726257.

It is an arithmetic number, because the mean of its divisors is an integer number (2858888714592).

Almost surely, 2^{20012221002102} is an apocalyptic number.

20012221002102 is an abundant number, since it is smaller than the sum of its proper divisors (25729998431370).

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

20012221002102 is a wasteful number, since it uses less digits than its factorization.

20012221002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476481452443.

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

Adding to 20012221002102 its reverse (20120012221002), we get a palindrome (40132233223104).

The spelling of 20012221002102 in words is "twenty trillion, twelve billion, two hundred twenty-one million, two thousand, one hundred two".