111220988951 has 2 divisors, whose sum is σ = 111220988952. Its totient is φ = 111220988950.

The previous prime is 111220988929. The next prime is 111220988969. The reversal of 111220988951 is 159889022111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111220988951 - 2²⁶ = 111153880087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111220988896 and 111220988905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111220988971) 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, 55610494475 + 55610494476.

It is an arithmetic number, because the mean of its divisors is an integer number (55610494476).

Almost surely, 2^111220988951 is an apocalyptic number.

111220988951 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220988951 is an equidigital number, since it uses as much as digits as its factorization.

111220988951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 47.

The spelling of 111220988951 in words is "one hundred eleven billion, two hundred twenty million, nine hundred eighty-eight thousand, nine hundred fifty-one".