21492698822 has 24 divisors (see below), whose sum is σ = 37263454896. Its totient is φ = 9107613504.

The previous prime is 21492698771. The next prime is 21492698831. The reversal of 21492698822 is 22889629412.

It is a super-2 number, since 2×21492698822² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13988 + ... + 207800.

It is an arithmetic number, because the mean of its divisors is an integer number (1552643954).

Almost surely, 2^21492698822 is an apocalyptic number.

21492698822 is a deficient number, since it is larger than the sum of its proper divisors (15770756074).

21492698822 is an equidigital number, since it uses as much as digits as its factorization.

21492698822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194000 (or 193911 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The spelling of 21492698822 in words is "twenty-one billion, four hundred ninety-two million, six hundred ninety-eight thousand, eight hundred twenty-two".