12253445616621 has 8 divisors (see below), whose sum is σ = 17823193624224. Its totient is φ = 7426330676720.

The previous prime is 12253445616611. The next prime is 12253445616623. The reversal of 12253445616621 is 12661654435221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12253445616621 - 2¹⁰ = 12253445615597 is a prime.

It is a super-2 number, since 2×12253445616621² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12253445616623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185658266886 + ... + 185658266951.

It is an arithmetic number, because the mean of its divisors is an integer number (2227899203028).

Almost surely, 2^{12253445616621} is an apocalyptic number.

12253445616621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12253445616621 is a deficient number, since it is larger than the sum of its proper divisors (5569748007603).

12253445616621 is a wasteful number, since it uses less digits than its factorization.

12253445616621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371316533851.

The product of its digits is 2073600, while the sum is 48.

The spelling of 12253445616621 in words is "twelve trillion, two hundred fifty-three billion, four hundred forty-five million, six hundred sixteen thousand, six hundred twenty-one".