111020111201 has 4 divisors (see below), whose sum is σ = 111182659632. Its totient is φ = 110857562772.

The previous prime is 111020111173. The next prime is 111020111219. The reversal of 111020111201 is 102111020111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111020111201 - 2²⁶ = 110953002337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020111101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81273191 + ... + 81274556.

It is an arithmetic number, because the mean of its divisors is an integer number (27795664908).

Almost surely, 2^111020111201 is an apocalyptic number.

It is an amenable number.

111020111201 is a deficient number, since it is larger than the sum of its proper divisors (162548431).

111020111201 is an equidigital number, since it uses as much as digits as its factorization.

111020111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162548430.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111020111201 its reverse (102111020111), we get a palindrome (213131131312).

The spelling of 111020111201 in words is "one hundred eleven billion, twenty million, one hundred eleven thousand, two hundred one".