111230223021 has 6 divisors (see below), whose sum is σ = 160665877710. Its totient is φ = 74153482008.

The previous prime is 111230223011. The next prime is 111230223023. The reversal of 111230223021 is 120322032111.

111230223021 is a `hidden beast` number, since 1 + 112 + 302 + 230 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 109882305225 + 1347917796 = 331485^2 + 36714^2 .

It is not a de Polignac number, because 111230223021 - 2¹⁷ = 111230091949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111230222985 and 111230223003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111230223023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6179456826 + ... + 6179456843.

It is an arithmetic number, because the mean of its divisors is an integer number (26777646285).

Almost surely, 2^111230223021 is an apocalyptic number.

It is an amenable number.

111230223021 is a deficient number, since it is larger than the sum of its proper divisors (49435654689).

111230223021 is a wasteful number, since it uses less digits than its factorization.

111230223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358913675 (or 12358913672 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 111230223021 its reverse (120322032111), we get a palindrome (231552255132).

The spelling of 111230223021 in words is "one hundred eleven billion, two hundred thirty million, two hundred twenty-three thousand, twenty-one".