111020120971 has 2 divisors, whose sum is σ = 111020120972. Its totient is φ = 111020120970.

The previous prime is 111020120969. The next prime is 111020121133. The reversal of 111020120971 is 179021020111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111020120971 - 2¹ = 111020120969 is a prime.

Together with 111020120969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111020129971) 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, 55510060485 + 55510060486.

It is an arithmetic number, because the mean of its divisors is an integer number (55510060486).

Almost surely, 2^111020120971 is an apocalyptic number.

111020120971 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020120971 is an equidigital number, since it uses as much as digits as its factorization.

111020120971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 111020120971 in words is "one hundred eleven billion, twenty million, one hundred twenty thousand, nine hundred seventy-one".