21010112222202 has 32 divisors (see below), whose sum is σ = 46705188513600. Its totient is φ = 7000963204464.

The previous prime is 21010112222173. The next prime is 21010112222219. The reversal of 21010112222202 is 20222221101012.

It is a happy number.

21010112222202 is a `hidden beast` number, since 210 + 1 + 0 + 11 + 222 + 220 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 66717468 + ... + 67031639.

It is an arithmetic number, because the mean of its divisors is an integer number (1459537141050).

Almost surely, 2^{21010112222202} is an apocalyptic number.

21010112222202 is an abundant number, since it is smaller than the sum of its proper divisors (25695076291398).

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

21010112222202 is a wasteful number, since it uses less digits than its factorization.

21010112222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133752027 (or 133752021 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21010112222202 its reverse (20222221101012), we get a palindrome (41232333323214).

The spelling of 21010112222202 in words is "twenty-one trillion, ten billion, one hundred twelve million, two hundred twenty-two thousand, two hundred two".