102231299249 has 2 divisors, whose sum is σ = 102231299250. Its totient is φ = 102231299248.

The previous prime is 102231299173. The next prime is 102231299251. The reversal of 102231299249 is 942992132201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67758693025 + 34472606224 = 260305^2 + 185668^2 .

It is a cyclic number.

It is not a de Polignac number, because 102231299249 - 2²⁰ = 102230250673 is a prime.

It is a super-2 number, since 2×102231299249² (a number of 23 digits) contains 22 as substring.

Together with 102231299251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102231299299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51115649624 + 51115649625.

It is an arithmetic number, because the mean of its divisors is an integer number (51115649625).

Almost surely, 2^102231299249 is an apocalyptic number.

It is an amenable number.

102231299249 is a deficient number, since it is larger than the sum of its proper divisors (1).

102231299249 is an equidigital number, since it uses as much as digits as its factorization.

102231299249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 102231299249 in words is "one hundred two billion, two hundred thirty-one million, two hundred ninety-nine thousand, two hundred forty-nine".