10111974721 has 4 divisors (see below), whose sum is σ = 10113084592. Its totient is φ = 10110864852.

The previous prime is 10111974703. The next prime is 10111974751. The reversal of 10111974721 is 12747911101.

10111974721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10111974721 - 2¹⁷ = 10111843649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111974701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541155 + ... + 559528.

It is an arithmetic number, because the mean of its divisors is an integer number (2528271148).

Almost surely, 2^10111974721 is an apocalyptic number.

It is an amenable number.

10111974721 is a deficient number, since it is larger than the sum of its proper divisors (1109871).

10111974721 is an equidigital number, since it uses as much as digits as its factorization.

10111974721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109870.

The product of its (nonzero) digits is 3528, while the sum is 34.

The spelling of 10111974721 in words is "ten billion, one hundred eleven million, nine hundred seventy-four thousand, seven hundred twenty-one".