21013312298 has 24 divisors (see below), whose sum is σ = 36683917956. Its totient is φ = 8989650560.

The previous prime is 21013312291. The next prime is 21013312303. The reversal of 21013312298 is 89221331012.

It can be written as a sum of positive squares in 2 ways, for example, as 20471027929 + 542284369 = 143077^2 + 23287^2 .

It is not an unprimeable number, because it can be changed into a prime (21013312291) 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 11 ways as a sum of consecutive naturals, for example, 2549765 + ... + 2557992.

Almost surely, 2^21013312298 is an apocalyptic number.

21013312298 is a deficient number, since it is larger than the sum of its proper divisors (15670605658).

21013312298 is a wasteful number, since it uses less digits than its factorization.

21013312298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5107798 (or 5107787 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 21013312298 in words is "twenty-one billion, thirteen million, three hundred twelve thousand, two hundred ninety-eight".