21097343622 has 8 divisors (see below), whose sum is σ = 42194687256. Its totient is φ = 7032447872.

The previous prime is 21097343591. The next prime is 21097343627. The reversal of 21097343622 is 22634379012.

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

21097343622 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21097343627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1758111963 + ... + 1758111974.

It is an arithmetic number, because the mean of its divisors is an integer number (5274335907).

Almost surely, 2^21097343622 is an apocalyptic number.

21097343622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21097343622 is a wasteful number, since it uses less digits than its factorization.

21097343622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516223942.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 21097343622 in words is "twenty-one billion, ninety-seven million, three hundred forty-three thousand, six hundred twenty-two".