21112212000202 has 16 divisors (see below), whose sum is σ = 31681532881800. Its totient is φ = 10551701302272.

The previous prime is 21112212000181. The next prime is 21112212000221. The reversal of 21112212000202 is 20200021221112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16842413810401 + 4269798189801 = 4103951^2 + 2066349^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289596468 + ... + 289669360.

Almost surely, 2^{21112212000202} is an apocalyptic number.

21112212000202 is a deficient number, since it is larger than the sum of its proper divisors (10569320881598).

21112212000202 is a wasteful number, since it uses less digits than its factorization.

21112212000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131337.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21112212000202 its reverse (20200021221112), we get a palindrome (41312233221314).

The spelling of 21112212000202 in words is "twenty-one trillion, one hundred twelve billion, two hundred twelve million, two hundred two", and thus it is an aban number.