21012011021012 has 24 divisors (see below), whose sum is σ = 40113992584512. Its totient is φ = 9550877585600.

The previous prime is 21012011020993. The next prime is 21012011021021.

21012011021012 is nontrivially palindromic in base 10.

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, 13166528 + ... + 14675880.

It is an arithmetic number, because the mean of its divisors is an integer number (1671416357688).

Almost surely, 2^{21012011021012} is an apocalyptic number.

21012011021012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21012011021012 is a deficient number, since it is larger than the sum of its proper divisors (19101981563500).

21012011021012 is a wasteful number, since it uses less digits than its factorization.

21012011021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825759 (or 1825757 counting only the distinct ones).

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

It can be divided in two parts, 2101201 and 1021012, that added together give a palindrome (3122213).

The spelling of 21012011021012 in words is "twenty-one trillion, twelve billion, eleven million, twenty-one thousand, twelve".