12235310621 has 4 divisors (see below), whose sum is σ = 12767280672. Its totient is φ = 11703340572.

The previous prime is 12235310603. The next prime is 12235310629. The reversal of 12235310621 is 12601353221.

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 12235310621 - 2¹⁴ = 12235294237 is a prime.

It is a super-4 number, since 4×12235310621⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12235310629) 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, 265984991 + ... + 265985036.

It is an arithmetic number, because the mean of its divisors is an integer number (3191820168).

Almost surely, 2^12235310621 is an apocalyptic number.

It is an amenable number.

12235310621 is a deficient number, since it is larger than the sum of its proper divisors (531970051).

12235310621 is an equidigital number, since it uses as much as digits as its factorization.

12235310621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531970050.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 12235310621 its reverse (12601353221), we get a palindrome (24836663842).

The spelling of 12235310621 in words is "twelve billion, two hundred thirty-five million, three hundred ten thousand, six hundred twenty-one".