220231310081 has 2 divisors, whose sum is σ = 220231310082. Its totient is φ = 220231310080.

The previous prime is 220231310059. The next prime is 220231310237. The reversal of 220231310081 is 180013132022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217234295056 + 2997015025 = 466084^2 + 54745^2 .

It is a cyclic number.

It is not a de Polignac number, because 220231310081 - 2¹⁰ = 220231309057 is a prime.

It is a super-2 number, since 2×220231310081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220231310581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110115655040 + 110115655041.

It is an arithmetic number, because the mean of its divisors is an integer number (110115655041).

Almost surely, 2^220231310081 is an apocalyptic number.

It is an amenable number.

220231310081 is a deficient number, since it is larger than the sum of its proper divisors (1).

220231310081 is an equidigital number, since it uses as much as digits as its factorization.

220231310081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 220231310081 in words is "two hundred twenty billion, two hundred thirty-one million, three hundred ten thousand, eighty-one".