111020111122001 has 2 divisors, whose sum is σ = 111020111122002. Its totient is φ = 111020111122000.

The previous prime is 111020111121979. The next prime is 111020111122009. The reversal of 111020111122001 is 100221111020111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99609362241601 + 11410748880400 = 9980449^2 + 3377980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020111122001 is a prime.

It is not a weakly prime, because it can be changed into another prime (111020111122009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510055561000 + 55510055561001.

It is an arithmetic number, because the mean of its divisors is an integer number (55510055561001).

Almost surely, 2^{111020111122001} is an apocalyptic number.

It is an amenable number.

111020111122001 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020111122001 is an equidigital number, since it uses as much as digits as its factorization.

111020111122001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111020111122001 its reverse (100221111020111), we get a palindrome (211241222142112).

The spelling of 111020111122001 in words is "one hundred eleven trillion, twenty billion, one hundred eleven million, one hundred twenty-two thousand, one".