12045625221 has 32 divisors (see below), whose sum is σ = 18426820608. Its totient is φ = 6856436160.

The previous prime is 12045625211. The next prime is 12045625231. The reversal of 12045625221 is 12252654021.

It is an interprime number because it is at equal distance from previous prime (12045625211) and next prime (12045625231).

It is not a de Polignac number, because 12045625221 - 2⁶ = 12045625157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12045625211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8440510 + ... + 8441936.

It is an arithmetic number, because the mean of its divisors is an integer number (575838144).

Almost surely, 2^12045625221 is an apocalyptic number.

It is an amenable number.

12045625221 is a deficient number, since it is larger than the sum of its proper divisors (6381195387).

12045625221 is a wasteful number, since it uses less digits than its factorization.

12045625221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 12045625221 in words is "twelve billion, forty-five million, six hundred twenty-five thousand, two hundred twenty-one".