21122001211112 has 32 divisors (see below), whose sum is σ = 41891759426880. Its totient is φ = 9963445472640.

The previous prime is 21122001211079. The next prime is 21122001211123. The reversal of 21122001211112 is 21111210022112.

It is a super-2 number, since 2×21122001211112² (a number of 27 digits) contains 22 as substring.

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, 786243314 + ... + 786270177.

It is an arithmetic number, because the mean of its divisors is an integer number (1309117482090).

Almost surely, 2^{21122001211112} is an apocalyptic number.

It is an amenable number.

21122001211112 is a deficient number, since it is larger than the sum of its proper divisors (20769758215768).

21122001211112 is a wasteful number, since it uses less digits than its factorization.

21122001211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572513593 (or 1572513589 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21122001211112 its reverse (21111210022112), we get a palindrome (42233211233224).

The spelling of 21122001211112 in words is "twenty-one trillion, one hundred twenty-two billion, one million, two hundred eleven thousand, one hundred twelve".