102225139 has 2 divisors, whose sum is σ = 102225140. Its totient is φ = 102225138.

The previous prime is 102225113. The next prime is 102225223. The reversal of 102225139 is 931522201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102225139 - 2⁵ = 102225107 is a prime.

It is not a weakly prime, because it can be changed into another prime (102225239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51112569 + 51112570.

It is an arithmetic number, because the mean of its divisors is an integer number (51112570).

Almost surely, 2^102225139 is an apocalyptic number.

102225139 is a deficient number, since it is larger than the sum of its proper divisors (1).

102225139 is an equidigital number, since it uses as much as digits as its factorization.

102225139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 102225139 is about 10110.6448360132. The cubic root of 102225139 is about 467.5763860428.

The spelling of 102225139 in words is "one hundred two million, two hundred twenty-five thousand, one hundred thirty-nine".