21322798413 has 16 divisors (see below), whose sum is σ = 33370043520. Its totient is φ = 11855146176.

The previous prime is 21322798411. The next prime is 21322798429. The reversal of 21322798413 is 31489722312.

It is not a de Polignac number, because 21322798413 - 2¹ = 21322798411 is a prime.

It is a super-2 number, since 2×21322798413² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322798411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13720458 + ... + 13722011.

It is an arithmetic number, because the mean of its divisors is an integer number (2085627720).

Almost surely, 2^21322798413 is an apocalyptic number.

It is an amenable number.

21322798413 is a deficient number, since it is larger than the sum of its proper divisors (12047245107).

21322798413 is a wasteful number, since it uses less digits than its factorization.

21322798413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27442516.

The product of its digits is 145152, while the sum is 42.

The spelling of 21322798413 in words is "twenty-one billion, three hundred twenty-two million, seven hundred ninety-eight thousand, four hundred thirteen".