111122252021111 has 2 divisors, whose sum is σ = 111122252021112. Its totient is φ = 111122252021110.

The previous prime is 111122252021093. The next prime is 111122252021113. The reversal of 111122252021111 is 111120252221111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111122252021111 - 2³⁸ = 110847374114167 is a prime.

Together with 111122252021113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111122252021113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561126010555 + 55561126010556.

It is an arithmetic number, because the mean of its divisors is an integer number (55561126010556).

Almost surely, 2^{111122252021111} is an apocalyptic number.

111122252021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122252021111 is an equidigital number, since it uses as much as digits as its factorization.

111122252021111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 23.

The spelling of 111122252021111 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred fifty-two million, twenty-one thousand, one hundred eleven".