111023133221 has 48 divisors (see below), whose sum is σ = 151945839360. Its totient is φ = 79742113920.

The previous prime is 111023133211. The next prime is 111023133223. The reversal of 111023133221 is 122331320111.

It is a happy number.

It is not a de Polignac number, because 111023133221 - 2⁶ = 111023133157 is a prime.

It is a super-2 number, since 2×111023133221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111023133193 and 111023133202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111023133223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5027015 + ... + 5049051.

It is an arithmetic number, because the mean of its divisors is an integer number (3165538320).

Almost surely, 2^111023133221 is an apocalyptic number.

111023133221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111023133221 is a deficient number, since it is larger than the sum of its proper divisors (40922706139).

111023133221 is a wasteful number, since it uses less digits than its factorization.

111023133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22794 (or 22787 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111023133221 its reverse (122331320111), we get a palindrome (233354453332).

The spelling of 111023133221 in words is "one hundred eleven billion, twenty-three million, one hundred thirty-three thousand, two hundred twenty-one".