21120111302194 has 16 divisors (see below), whose sum is σ = 32702371107840. Its totient is φ = 10219326418080.

The previous prime is 21120111302189. The next prime is 21120111302263. The reversal of 21120111302194 is 49120311102112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6779287 + ... + 9391429.

It is an arithmetic number, because the mean of its divisors is an integer number (2043898194240).

Almost surely, 2^{21120111302194} is an apocalyptic number.

21120111302194 is a deficient number, since it is larger than the sum of its proper divisors (11582259805646).

21120111302194 is a wasteful number, since it uses less digits than its factorization.

21120111302194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742585.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 21120111302194 in words is "twenty-one trillion, one hundred twenty billion, one hundred eleven million, three hundred two thousand, one hundred ninety-four".