220231302021 has 24 divisors (see below), whose sum is σ = 334915439040. Its totient is φ = 139068187200.

The previous prime is 220231302013. The next prime is 220231302091. The reversal of 220231302021 is 120203132022.

It is not a de Polignac number, because 220231302021 - 2³ = 220231302013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220231301985 and 220231302003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220231302091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 850456 + ... + 1078766.

It is an arithmetic number, because the mean of its divisors is an integer number (13954809960).

Almost surely, 2^220231302021 is an apocalyptic number.

It is an amenable number.

220231302021 is a deficient number, since it is larger than the sum of its proper divisors (114684137019).

220231302021 is a wasteful number, since it uses less digits than its factorization.

220231302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233977 (or 233974 counting only the distinct ones).

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

Adding to 220231302021 its reverse (120203132022), we get a palindrome (340434434043).

The spelling of 220231302021 in words is "two hundred twenty billion, two hundred thirty-one million, three hundred two thousand, twenty-one".