20012222221002 has 48 divisors (see below), whose sum is σ = 47591810199648. Its totient is φ = 6027105399840.

The previous prime is 20012222220931. The next prime is 20012222221081.

20012222221002 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 310004013 + ... + 310068560.

It is an arithmetic number, because the mean of its divisors is an integer number (991496045826).

Almost surely, 2^{20012222221002} is an apocalyptic number.

20012222221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20012222221002 is an abundant number, since it is smaller than the sum of its proper divisors (27579587978646).

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

20012222221002 is a wasteful number, since it uses less digits than its factorization.

20012222221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620072755 (or 620072752 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

It can be divided in two parts, 2001222 and 2221002, that added together give a palindrome (4222224).

The spelling of 20012222221002 in words is "twenty trillion, twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two".