111976933421 has 4 divisors (see below), whose sum is σ = 111992005692. Its totient is φ = 111961861152.

The previous prime is 111976933363. The next prime is 111976933427. The reversal of 111976933421 is 124339679111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124339679111 = 255713 ⋅486247.

It can be written as a sum of positive squares in 2 ways, for example, as 18943393225 + 93033540196 = 137635^2 + 305014^2 .

It is a cyclic number.

It is not a de Polignac number, because 111976933421 - 2²² = 111972739117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111976933427) 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, 7524986 + ... + 7539851.

It is an arithmetic number, because the mean of its divisors is an integer number (27998001423).

Almost surely, 2^111976933421 is an apocalyptic number.

It is an amenable number.

111976933421 is a deficient number, since it is larger than the sum of its proper divisors (15072271).

111976933421 is an equidigital number, since it uses as much as digits as its factorization.

111976933421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072270.

The product of its digits is 244944, while the sum is 47.

The spelling of 111976933421 in words is "one hundred eleven billion, nine hundred seventy-six million, nine hundred thirty-three thousand, four hundred twenty-one".