21079196422 has 8 divisors (see below), whose sum is σ = 32389984872. Its totient is φ = 10282534800.

The previous prime is 21079196363. The next prime is 21079196431. The reversal of 21079196422 is 22469197012.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128531604 + ... + 128531767.

It is an arithmetic number, because the mean of its divisors is an integer number (4048748109).

Almost surely, 2^21079196422 is an apocalyptic number.

21079196422 is a deficient number, since it is larger than the sum of its proper divisors (11310788450).

21079196422 is a wasteful number, since it uses less digits than its factorization.

21079196422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257063414.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 21079196422 in words is "twenty-one billion, seventy-nine million, one hundred ninety-six thousand, four hundred twenty-two".