21318702202 has 32 divisors (see below), whose sum is σ = 40732778880. Its totient is φ = 8146552320.

The previous prime is 21318702187. The next prime is 21318702203. The reversal of 21318702202 is 20220781312.

It is not an unprimeable number, because it can be changed into a prime (21318702203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2352699 + ... + 2361742.

It is an arithmetic number, because the mean of its divisors is an integer number (1272899340).

Almost surely, 2^21318702202 is an apocalyptic number.

21318702202 is a deficient number, since it is larger than the sum of its proper divisors (19414076678).

21318702202 is a wasteful number, since it uses less digits than its factorization.

21318702202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714486.

The product of its (nonzero) digits is 2688, while the sum is 28.

The spelling of 21318702202 in words is "twenty-one billion, three hundred eighteen million, seven hundred two thousand, two hundred two".