220201220221231 has 2 divisors, whose sum is σ = 220201220221232. Its totient is φ = 220201220221230.

The previous prime is 220201220221187. The next prime is 220201220221321. The reversal of 220201220221231 is 132122022102022.

It is a happy number.

Together with next prime (220201220221321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220201220221231 is a prime.

It is a super-2 number, since 2×220201220221231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220201220251231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100610110615 + 110100610110616.

It is an arithmetic number, because the mean of its divisors is an integer number (110100610110616).

Almost surely, 2^{220201220221231} is an apocalyptic number.

220201220221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

220201220221231 is an equidigital number, since it uses as much as digits as its factorization.

220201220221231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 220201220221231 its reverse (132122022102022), we get a palindrome (352323242323253).

The spelling of 220201220221231 in words is "two hundred twenty trillion, two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred thirty-one".