21201000112 has 20 divisors (see below), whose sum is σ = 41086191496. Its totient is φ = 10598112000.

The previous prime is 21201000091. The next prime is 21201000113. The reversal of 21201000112 is 21100010212.

It is not an unprimeable number, because it can be changed into a prime (21201000113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74889 + ... + 219112.

Almost surely, 2^21201000112 is an apocalyptic number.

It is an amenable number.

21201000112 is a deficient number, since it is larger than the sum of its proper divisors (19885191384).

21201000112 is a wasteful number, since it uses less digits than its factorization.

21201000112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298516 (or 298510 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21201000112 its reverse (21100010212), we get a palindrome (42301010324).

The spelling of 21201000112 in words is "twenty-one billion, two hundred one million, one hundred twelve", and thus it is an aban number.