12252421121 has 8 divisors (see below), whose sum is σ = 12886297344. Its totient is φ = 11633459760.

The previous prime is 12252421109. The next prime is 12252421157. The reversal of 12252421121 is 12112425221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12252421121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12252421921) 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, 3727031 + ... + 3730316.

It is an arithmetic number, because the mean of its divisors is an integer number (1610787168).

Almost surely, 2^12252421121 is an apocalyptic number.

It is an amenable number.

12252421121 is a deficient number, since it is larger than the sum of its proper divisors (633876223).

12252421121 is an equidigital number, since it uses as much as digits as its factorization.

12252421121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7457431.

The product of its digits is 640, while the sum is 23.

Adding to 12252421121 its reverse (12112425221), we get a palindrome (24364846342).

The spelling of 12252421121 in words is "twelve billion, two hundred fifty-two million, four hundred twenty-one thousand, one hundred twenty-one".