220221023031 has 6 divisors (see below), whose sum is σ = 318097033280. Its totient is φ = 146814015348.

The previous prime is 220221022999. The next prime is 220221023053. The reversal of 220221023031 is 130320122022.

220221023031 is a `hidden beast` number, since 220 + 2 + 210 + 230 + 3 + 1 = 666.

It is not a de Polignac number, because 220221023031 - 2⁵ = 220221022999 is a prime.

It is a super-2 number, since 2×220221023031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220221022995 and 220221023013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221028031) 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, 12234501271 + ... + 12234501288.

Almost surely, 2^220221023031 is an apocalyptic number.

220221023031 is a deficient number, since it is larger than the sum of its proper divisors (97876010249).

220221023031 is a wasteful number, since it uses less digits than its factorization.

220221023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24469002565 (or 24469002562 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 220221023031 its reverse (130320122022), we get a palindrome (350541145053).

The spelling of 220221023031 in words is "two hundred twenty billion, two hundred twenty-one million, twenty-three thousand, thirty-one".