223111291979 has 2 divisors, whose sum is σ = 223111291980. Its totient is φ = 223111291978.

The previous prime is 223111291967. The next prime is 223111291987. The reversal of 223111291979 is 979192111322.

223111291979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223111291979 - 2³⁶ = 154391815243 is a prime.

It is a super-3 number, since 3×223111291979³ (a number of 35 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (223111221979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111555645989 + 111555645990.

It is an arithmetic number, because the mean of its divisors is an integer number (111555645990).

Almost surely, 2^223111291979 is an apocalyptic number.

223111291979 is a deficient number, since it is larger than the sum of its proper divisors (1).

223111291979 is an equidigital number, since it uses as much as digits as its factorization.

223111291979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 47.

The spelling of 223111291979 in words is "two hundred twenty-three billion, one hundred eleven million, two hundred ninety-one thousand, nine hundred seventy-nine".