12237551221 has 8 divisors (see below), whose sum is σ = 13986444800. Its totient is φ = 10488825648.

The previous prime is 12237551197. The next prime is 12237551237. The reversal of 12237551221 is 12215573221.

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

It is not a de Polignac number, because 12237551221 - 2⁷ = 12237551093 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 (12237551321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243355 + ... + 289303.

It is an arithmetic number, because the mean of its divisors is an integer number (1748305600).

Almost surely, 2^12237551221 is an apocalyptic number.

It is an amenable number.

12237551221 is a deficient number, since it is larger than the sum of its proper divisors (1748893579).

12237551221 is an equidigital number, since it uses as much as digits as its factorization.

12237551221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84003.

The product of its digits is 8400, while the sum is 31.

The spelling of 12237551221 in words is "twelve billion, two hundred thirty-seven million, five hundred fifty-one thousand, two hundred twenty-one".