21010212212202 has 96 divisors (see below), whose sum is σ = 46747886814720. Its totient is φ = 6817425138720.

The previous prime is 21010212212189. The next prime is 21010212212219. The reversal of 21010212212202 is 20221221201012.

It is a happy number.

21010212212202 is a `hidden beast` number, since 210 + 1 + 0 + 212 + 21 + 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 47 ways as a sum of consecutive naturals, for example, 176765949 + ... + 176884767.

It is an arithmetic number, because the mean of its divisors is an integer number (486957154320).

Almost surely, 2^{21010212212202} is an apocalyptic number.

21010212212202 is an abundant number, since it is smaller than the sum of its proper divisors (25737674602518).

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

21010212212202 is a wasteful number, since it uses less digits than its factorization.

21010212212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120648 (or 120645 counting only the distinct ones).

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

Adding to 21010212212202 its reverse (20221221201012), we get a palindrome (41231433413214).

The spelling of 21010212212202 in words is "twenty-one trillion, ten billion, two hundred twelve million, two hundred twelve thousand, two hundred two".