21112002211012 has 12 divisors (see below), whose sum is σ = 36946091120400. Its totient is φ = 10555976176616.

The previous prime is 21112002211009. The next prime is 21112002211019. The reversal of 21112002211012 is 21011220021112.

It is not an unprimeable number, because it can be changed into a prime (21112002211019) 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, 4257178 + ... + 7768369.

It is an arithmetic number, because the mean of its divisors is an integer number (3078840926700).

Almost surely, 2^{21112002211012} is an apocalyptic number.

It is an amenable number.

21112002211012 is a deficient number, since it is larger than the sum of its proper divisors (15834088909388).

21112002211012 is a wasteful number, since it uses less digits than its factorization.

21112002211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12464450 (or 12464448 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21112002211012 its reverse (21011220021112), we get a palindrome (42123222232124).

The spelling of 21112002211012 in words is "twenty-one trillion, one hundred twelve billion, two million, two hundred eleven thousand, twelve".