21110097112 has 32 divisors (see below), whose sum is σ = 42636646080. Its totient is φ = 9740724480.

The previous prime is 21110097091. The next prime is 21110097119. The reversal of 21110097112 is 21179001112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110097119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441412 + ... + 486892.

It is an arithmetic number, because the mean of its divisors is an integer number (1332395190).

Almost surely, 2^21110097112 is an apocalyptic number.

It is an amenable number.

21110097112 is an abundant number, since it is smaller than the sum of its proper divisors (21526548968).

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

21110097112 is a wasteful number, since it uses less digits than its factorization.

21110097112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49963 (or 49959 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 25.

Adding to 21110097112 its reverse (21179001112), we get a palindrome (42289098224).

The spelling of 21110097112 in words is "twenty-one billion, one hundred ten million, ninety-seven thousand, one hundred twelve".