21112002021112 has 8 divisors (see below), whose sum is σ = 39585003789600. Its totient is φ = 10556001010552.

The previous prime is 21112002021107. The next prime is 21112002021139. The reversal of 21112002021112 is 21112020021112.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319500126312 + ... + 1319500126327.

It is an arithmetic number, because the mean of its divisors is an integer number (4948125473700).

Almost surely, 2^{21112002021112} is an apocalyptic number.

It is an amenable number.

21112002021112 is a deficient number, since it is larger than the sum of its proper divisors (18473001768488).

21112002021112 is a wasteful number, since it uses less digits than its factorization.

21112002021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639000252645 (or 2639000252641 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112002021112 its reverse (21112020021112), we get a palindrome (42224022042224).

The spelling of 21112002021112 in words is "twenty-one trillion, one hundred twelve billion, two million, twenty-one thousand, one hundred twelve".