231022222201 has 2 divisors, whose sum is σ = 231022222202. Its totient is φ = 231022222200.

The previous prime is 231022222199. The next prime is 231022222243. The reversal of 231022222201 is 102222220132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163018100025 + 68004122176 = 403755^2 + 260776^2 .

It is a cyclic number.

It is not a de Polignac number, because 231022222201 - 2¹ = 231022222199 is a prime.

Together with 231022222199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231022220201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115511111100 + 115511111101.

It is an arithmetic number, because the mean of its divisors is an integer number (115511111101).

Almost surely, 2^231022222201 is an apocalyptic number.

It is an amenable number.

231022222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

231022222201 is an equidigital number, since it uses as much as digits as its factorization.

231022222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 231022222201 its reverse (102222220132), we get a palindrome (333244442333).

The spelling of 231022222201 in words is "two hundred thirty-one billion, twenty-two million, two hundred twenty-two thousand, two hundred one".