21112122102202 has 16 divisors (see below), whose sum is σ = 32234986113120. Its totient is φ = 10368597037552.

The previous prime is 21112122102139. The next prime is 21112122102251. The reversal of 21112122102202 is 20220122121112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112122102202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367547752 + ... + 367605187.

It is an arithmetic number, because the mean of its divisors is an integer number (2014686632070).

Almost surely, 2^{21112122102202} is an apocalyptic number.

21112122102202 is a deficient number, since it is larger than the sum of its proper divisors (11122864010918).

21112122102202 is a wasteful number, since it uses less digits than its factorization.

21112122102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735153197.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21112122102202 its reverse (20220122121112), we get a palindrome (41332244223314).

The spelling of 21112122102202 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, one hundred two thousand, two hundred two".