102220231 has 2 divisors, whose sum is σ = 102220232. Its totient is φ = 102220230.

The previous prime is 102220207. The next prime is 102220267. The reversal of 102220231 is 132022201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102220231 - 2¹¹ = 102218183 is a prime.

It is a super-2 number, since 2×102220231² = 20897951251386722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102220271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110115 + 51110116.

It is an arithmetic number, because the mean of its divisors is an integer number (51110116).

Almost surely, 2^102220231 is an apocalyptic number.

102220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220231 is an equidigital number, since it uses as much as digits as its factorization.

102220231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 102220231 is about 10110.4021186103. The cubic root of 102220231 is about 467.5689028815.

Adding to 102220231 its reverse (132022201), we get a palindrome (234242432).

The spelling of 102220231 in words is "one hundred two million, two hundred twenty thousand, two hundred thirty-one".