21124221298 has 8 divisors (see below), whose sum is σ = 31725501660. Its totient is φ = 10549054080.

The previous prime is 21124221271. The next prime is 21124221331. The reversal of 21124221298 is 89212242112.

It can be written as a sum of positive squares in 2 ways, for example, as 18221490169 + 2902731129 = 134987^2 + 53877^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6526263 + ... + 6529498.

Almost surely, 2^21124221298 is an apocalyptic number.

21124221298 is a deficient number, since it is larger than the sum of its proper divisors (10601280362).

21124221298 is a wasteful number, since it uses less digits than its factorization.

21124221298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056572.

The product of its digits is 9216, while the sum is 34.

The spelling of 21124221298 in words is "twenty-one billion, one hundred twenty-four million, two hundred twenty-one thousand, two hundred ninety-eight".