111020111121001 has 16 divisors (see below), whose sum is σ = 116015129193600. Its totient is φ = 106039105110400.

The previous prime is 111020111120987. The next prime is 111020111121013. The reversal of 111020111121001 is 100121111020111.

It is a cyclic number.

It is not a de Polignac number, because 111020111121001 - 2²⁷ = 111019976903273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020111122001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1305323925 + ... + 1305408973.

It is an arithmetic number, because the mean of its divisors is an integer number (7250945574600).

Almost surely, 2^{111020111121001} is an apocalyptic number.

It is an amenable number.

111020111121001 is a deficient number, since it is larger than the sum of its proper divisors (4995018072599).

111020111121001 is an equidigital number, since it uses as much as digits as its factorization.

111020111121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166736.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111020111121001 its reverse (100121111020111), we get a palindrome (211141222141112).

The spelling of 111020111121001 in words is "one hundred eleven trillion, twenty billion, one hundred eleven million, one hundred twenty-one thousand, one".