21120995274 has 8 divisors (see below), whose sum is σ = 42241990560. Its totient is φ = 7040331756.

The previous prime is 21120995267. The next prime is 21120995293. The reversal of 21120995274 is 47259902112.

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

21120995274 is an admirable 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, 1760082934 + ... + 1760082945.

It is an arithmetic number, because the mean of its divisors is an integer number (5280248820).

Almost surely, 2^21120995274 is an apocalyptic number.

21120995274 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.

21120995274 is a wasteful number, since it uses less digits than its factorization.

21120995274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520165884.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 21120995274 in words is "twenty-one billion, one hundred twenty million, nine hundred ninety-five thousand, two hundred seventy-four".