21102221002112 has 16 divisors (see below), whose sum is σ = 42039580902900. Its totient is φ = 10551110500992.

The previous prime is 21102221002097. The next prime is 21102221002127. The reversal of 21102221002112 is 21120012220112.

It is an interprime number because it is at equal distance from previous prime (21102221002097) and next prime (21102221002127).

It is a tau number, because it is divible by the number of its divisors (16).

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, 82430550662 + ... + 82430550917.

Almost surely, 2^{21102221002112} is an apocalyptic number.

It is an amenable number.

21102221002112 is a deficient number, since it is larger than the sum of its proper divisors (20937359900788).

21102221002112 is an equidigital number, since it uses as much as digits as its factorization.

21102221002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164861101593 (or 164861101581 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21102221002112 its reverse (21120012220112), we get a palindrome (42222233222224).

The spelling of 21102221002112 in words is "twenty-one trillion, one hundred two billion, two hundred twenty-one million, two thousand, one hundred twelve".