130902221 has 2 divisors, whose sum is σ = 130902222. Its totient is φ = 130902220.

The previous prime is 130902199. The next prime is 130902253. The reversal of 130902221 is 122209031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90516196 + 40386025 = 9514^2 + 6355^2 .

It is a cyclic number.

It is not a de Polignac number, because 130902221 - 2¹⁴ = 130885837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130902193 and 130902202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130902271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65451110 + 65451111.

It is an arithmetic number, because the mean of its divisors is an integer number (65451111).

Almost surely, 2^130902221 is an apocalyptic number.

It is an amenable number.

130902221 is a deficient number, since it is larger than the sum of its proper divisors (1).

130902221 is an equidigital number, since it uses as much as digits as its factorization.

130902221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 130902221 is about 11441.2508494482. The cubic root of 130902221 is about 507.7489162097.

The spelling of 130902221 in words is "one hundred thirty million, nine hundred two thousand, two hundred twenty-one".