111201023 has 2 divisors, whose sum is σ = 111201024. Its totient is φ = 111201022.

The previous prime is 111201019. The next prime is 111201043. The reversal of 111201023 is 320102111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111201023 - 2² = 111201019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111200995 and 111201013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111201043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55600511 + 55600512.

It is an arithmetic number, because the mean of its divisors is an integer number (55600512).

Almost surely, 2^111201023 is an apocalyptic number.

111201023 is a deficient number, since it is larger than the sum of its proper divisors (1).

111201023 is an equidigital number, since it uses as much as digits as its factorization.

111201023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 111201023 is about 10545.1895668120. The cubic root of 111201023 is about 480.8794971899.

Adding to 111201023 its reverse (320102111), we get a palindrome (431303134).

The spelling of 111201023 in words is "one hundred eleven million, two hundred one thousand, twenty-three".