20021111112002 has 128 divisors (see below), whose sum is σ = 41481921761280. Its totient is φ = 6995951389440.

The previous prime is 20021111111987. The next prime is 20021111112011.

20021111112002 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10012949 + ... + 11844887.

It is an arithmetic number, because the mean of its divisors is an integer number (324077513760).

Almost surely, 2^{20021111112002} is an apocalyptic number.

20021111112002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021111112002 is an abundant number, since it is smaller than the sum of its proper divisors (21460810649278).

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

20021111112002 is a wasteful number, since it uses less digits than its factorization.

20021111112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832128.

The product of its (nonzero) digits is 16, while the sum is 14.

It can be divided in two parts, 2002111 and 1112002, that added together give a palindrome (3114113).

The spelling of 20021111112002 in words is "twenty trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, two".