102100220231 has 2 divisors, whose sum is σ = 102100220232. Its totient is φ = 102100220230.

The previous prime is 102100220227. The next prime is 102100220237. The reversal of 102100220231 is 132022001201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102100220231 - 2² = 102100220227 is a prime.

It is a super-2 number, since 2×102100220231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100220237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050110115 + 51050110116.

It is an arithmetic number, because the mean of its divisors is an integer number (51050110116).

Almost surely, 2^102100220231 is an apocalyptic number.

102100220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100220231 is an equidigital number, since it uses as much as digits as its factorization.

102100220231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102100220231 its reverse (132022001201), we get a palindrome (234122221432).

The spelling of 102100220231 in words is "one hundred two billion, one hundred million, two hundred twenty thousand, two hundred thirty-one".