21213612402202 has 96 divisors (see below), whose sum is σ = 36962249184000. Its totient is φ = 9109453879680.

The previous prime is 21213612402149. The next prime is 21213612402223. The reversal of 21213612402202 is 20220421631212.

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 47 ways as a sum of consecutive naturals, for example, 1681878448 + ... + 1681891060.

It is an arithmetic number, because the mean of its divisors is an integer number (385023429000).

Almost surely, 2^{21213612402202} is an apocalyptic number.

21213612402202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21213612402202 is a deficient number, since it is larger than the sum of its proper divisors (15748636781798).

21213612402202 is a wasteful number, since it uses less digits than its factorization.

21213612402202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17812 (or 17801 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 21213612402202 in words is "twenty-one trillion, two hundred thirteen billion, six hundred twelve million, four hundred two thousand, two hundred two".