21022331198 has 8 divisors (see below), whose sum is σ = 34400178360. Its totient is φ = 9555605080.

The previous prime is 21022331173. The next prime is 21022331203. The reversal of 21022331198 is 89113322012.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477780233 + ... + 477780276.

It is an arithmetic number, because the mean of its divisors is an integer number (4300022295).

Almost surely, 2^21022331198 is an apocalyptic number.

21022331198 is a deficient number, since it is larger than the sum of its proper divisors (13377847162).

21022331198 is a wasteful number, since it uses less digits than its factorization.

21022331198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955560522.

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

The spelling of 21022331198 in words is "twenty-one billion, twenty-two million, three hundred thirty-one thousand, one hundred ninety-eight".