12225152261 has 4 divisors (see below), whose sum is σ = 13971602592. Its totient is φ = 10478701932.

The previous prime is 12225152239. The next prime is 12225152267. The reversal of 12225152261 is 16225152221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12225152261 - 2²⁶ = 12158043397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12225152267) 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, 873225155 + ... + 873225168.

It is an arithmetic number, because the mean of its divisors is an integer number (3492900648).

Almost surely, 2^12225152261 is an apocalyptic number.

It is an amenable number.

12225152261 is a deficient number, since it is larger than the sum of its proper divisors (1746450331).

12225152261 is an equidigital number, since it uses as much as digits as its factorization.

12225152261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746450330.

The product of its digits is 4800, while the sum is 29.

The spelling of 12225152261 in words is "twelve billion, two hundred twenty-five million, one hundred fifty-two thousand, two hundred sixty-one".