111213979879 has 2 divisors, whose sum is σ = 111213979880. Its totient is φ = 111213979878.

The previous prime is 111213979871. The next prime is 111213979931. The reversal of 111213979879 is 978979312111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111213979879 - 2³ = 111213979871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111213979871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606989939 + 55606989940.

It is an arithmetic number, because the mean of its divisors is an integer number (55606989940).

Almost surely, 2^111213979879 is an apocalyptic number.

111213979879 is a deficient number, since it is larger than the sum of its proper divisors (1).

111213979879 is an equidigital number, since it uses as much as digits as its factorization.

111213979879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 58.

The spelling of 111213979879 in words is "one hundred eleven billion, two hundred thirteen million, nine hundred seventy-nine thousand, eight hundred seventy-nine".