220221023331 has 32 divisors (see below), whose sum is σ = 315274489920. Its totient is φ = 136235188224.

The previous prime is 220221023273. The next prime is 220221023333. The reversal of 220221023331 is 133320122022.

It is a happy number.

It is not a de Polignac number, because 220221023331 - 2¹³ = 220221015139 is a prime.

It is a super-2 number, since 2×220221023331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220221023298 and 220221023307.

It is not an unprimeable number, because it can be changed into a prime (220221023333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11937891 + ... + 11956323.

It is an arithmetic number, because the mean of its divisors is an integer number (9852327810).

Almost surely, 2^220221023331 is an apocalyptic number.

220221023331 is a deficient number, since it is larger than the sum of its proper divisors (95053466589).

220221023331 is a wasteful number, since it uses less digits than its factorization.

220221023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21735.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220221023331 its reverse (133320122022), we get a palindrome (353541145353).

The spelling of 220221023331 in words is "two hundred twenty billion, two hundred twenty-one million, twenty-three thousand, three hundred thirty-one".