111020920111 has 2 divisors, whose sum is σ = 111020920112. Its totient is φ = 111020920110.

The previous prime is 111020920097. The next prime is 111020920117. The reversal of 111020920111 is 111029020111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111020920111 - 2⁹ = 111020919599 is a prime.

It is a super-3 number, since 3×111020920111³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111020920117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510460055 + 55510460056.

It is an arithmetic number, because the mean of its divisors is an integer number (55510460056).

Almost surely, 2^111020920111 is an apocalyptic number.

111020920111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020920111 is an equidigital number, since it uses as much as digits as its factorization.

111020920111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 111020920111 its reverse (111029020111), we get a palindrome (222049940222).

The spelling of 111020920111 in words is "one hundred eleven billion, twenty million, nine hundred twenty thousand, one hundred eleven".