21112020020010 has 64 divisors (see below), whose sum is σ = 51254380679040. Its totient is φ = 5564852874240.

The previous prime is 21112020019991. The next prime is 21112020020041. The reversal of 21112020020010 is 1002002021112.

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, 7195270 + ... + 9695150.

It is an arithmetic number, because the mean of its divisors is an integer number (800849698110).

Almost surely, 2^{21112020020010} is an apocalyptic number.

21112020020010 is an abundant number, since it is smaller than the sum of its proper divisors (30142360659030).

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

21112020020010 is a wasteful number, since it uses less digits than its factorization.

21112020020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503143.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21112020020010 its reverse (1002002021112), we get a palindrome (22114022041122).

The spelling of 21112020020010 in words is "twenty-one trillion, one hundred twelve billion, twenty million, twenty thousand, ten".