21200011101112 has 128 divisors (see below), whose sum is σ = 43497579458880. Its totient is φ = 9648460800000.

The previous prime is 21200011101091. The next prime is 21200011101121. The reversal of 21200011101112 is 21110111000212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21200011101092 and 21200011101101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300669862 + ... + 300740362.

Almost surely, 2^{21200011101112} is an apocalyptic number.

It is an amenable number.

21200011101112 is an abundant number, since it is smaller than the sum of its proper divisors (22297568357768).

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

21200011101112 is a wasteful number, since it uses less digits than its factorization.

21200011101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71193 (or 71189 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21200011101112 its reverse (21110111000212), we get a palindrome (42310122101324).

The spelling of 21200011101112 in words is "twenty-one trillion, two hundred billion, eleven million, one hundred one thousand, one hundred twelve".