220232233221 has 72 divisors (see below), whose sum is σ = 399432196800. Its totient is φ = 105605660160.

The previous prime is 220232233189. The next prime is 220232233229. The reversal of 220232233221 is 122332232022.

It is not a de Polignac number, because 220232233221 - 2⁵ = 220232233189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220232233191 and 220232233200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220232233229) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 173005 + ... + 685853.

It is an arithmetic number, because the mean of its divisors is an integer number (5547669400).

Almost surely, 2^220232233221 is an apocalyptic number.

220232233221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220232233221 is a deficient number, since it is larger than the sum of its proper divisors (179199963579).

220232233221 is a wasteful number, since it uses less digits than its factorization.

220232233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512907 (or 512883 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 220232233221 its reverse (122332232022), we get a palindrome (342564465243).

The spelling of 220232233221 in words is "two hundred twenty billion, two hundred thirty-two million, two hundred thirty-three thousand, two hundred twenty-one".