21101200202112 has 32 divisors (see below), whose sum is σ = 56050063037880. Its totient is φ = 7033733400576.

The previous prime is 21101200202077. The next prime is 21101200202197. The reversal of 21101200202112 is 21120200210112.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×21101200202112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21101200202091 and 21101200202100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27475520713 + ... + 27475521480.

Almost surely, 2^{21101200202112} is an apocalyptic number.

It is an amenable number.

21101200202112 is an abundant number, since it is smaller than the sum of its proper divisors (34948862835768).

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

21101200202112 is an equidigital number, since it uses as much as digits as its factorization.

21101200202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54951042210 (or 54951042198 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21101200202112 its reverse (21120200210112), we get a palindrome (42221400412224).

The spelling of 21101200202112 in words is "twenty-one trillion, one hundred one billion, two hundred million, two hundred two thousand, one hundred twelve".