21100313121302 has 64 divisors (see below), whose sum is σ = 33601028186880. Its totient is φ = 9909927346176.

The previous prime is 21100313121269. The next prime is 21100313121311. The reversal of 21100313121302 is 20312131300112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2023617413 + ... + 2023627839.

It is an arithmetic number, because the mean of its divisors is an integer number (525016065420).

Almost surely, 2^{21100313121302} is an apocalyptic number.

21100313121302 is a deficient number, since it is larger than the sum of its proper divisors (12500715065578).

21100313121302 is a wasteful number, since it uses less digits than its factorization.

21100313121302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11645.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21100313121302 its reverse (20312131300112), we get a palindrome (41412444421414).

The spelling of 21100313121302 in words is "twenty-one trillion, one hundred billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred two".