21120011099974 has 8 divisors (see below), whose sum is σ = 31680509663880. Its totient is φ = 10559841212016.

The previous prime is 21120011099953. The next prime is 21120011099981. The reversal of 21120011099974 is 47999011002112.

It is a happy number.

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, 82008279 + ... + 82265410.

It is an arithmetic number, because the mean of its divisors is an integer number (3960063707985).

Almost surely, 2^{21120011099974} is an apocalyptic number.

21120011099974 is a deficient number, since it is larger than the sum of its proper divisors (10560498563906).

21120011099974 is a wasteful number, since it uses less digits than its factorization.

21120011099974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164337974.

The product of its (nonzero) digits is 81648, while the sum is 46.

The spelling of 21120011099974 in words is "twenty-one trillion, one hundred twenty billion, eleven million, ninety-nine thousand, nine hundred seventy-four".