21110000112012 has 48 divisors (see below), whose sum is σ = 57247457944320. Its totient is φ = 5929200998592.

The previous prime is 21110000111917. The next prime is 21110000112029. The reversal of 21110000112012 is 21021100001112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2129736783 + ... + 2129746694.

It is an arithmetic number, because the mean of its divisors is an integer number (1192655373840).

Almost surely, 2^{21110000112012} is an apocalyptic number.

It is an amenable number.

21110000112012 is an abundant number, since it is smaller than the sum of its proper divisors (36137457832308).

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

21110000112012 is a wasteful number, since it uses less digits than its factorization.

21110000112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259483550 (or 4259483548 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21110000112012 its reverse (21021100001112), we get a palindrome (42131100113124).

The spelling of 21110000112012 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve thousand, twelve".