12902250091 has 4 divisors (see below), whose sum is σ = 12906829800. Its totient is φ = 12897670384.

The previous prime is 12902250089. The next prime is 12902250121. The reversal of 12902250091 is 19005220921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19005220921 = 397 ⋅47872093.

It is a cyclic number.

It is not a de Polignac number, because 12902250091 - 2¹ = 12902250089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12902230091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2285626 + ... + 2291263.

It is an arithmetic number, because the mean of its divisors is an integer number (3226707450).

Almost surely, 2^12902250091 is an apocalyptic number.

12902250091 is a deficient number, since it is larger than the sum of its proper divisors (4579709).

12902250091 is an equidigital number, since it uses as much as digits as its factorization.

12902250091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579708.

The product of its (nonzero) digits is 3240, while the sum is 31.

The spelling of 12902250091 in words is "twelve billion, nine hundred two million, two hundred fifty thousand, ninety-one".