12221333331 has 8 divisors (see below), whose sum is σ = 16302598080. Its totient is φ = 8143812072.

The previous prime is 12221333309. The next prime is 12221333353. The reversal of 12221333331 is 13333312221.

It is an interprime number because it is at equal distance from previous prime (12221333309) and next prime (12221333353).

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

It is not a de Polignac number, because 12221333331 - 2⁷ = 12221333203 is a prime.

It is a super-2 number, since 2×12221333331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12221334331) 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, 928245 + ... + 941318.

It is an arithmetic number, because the mean of its divisors is an integer number (2037824760).

Almost surely, 2^12221333331 is an apocalyptic number.

12221333331 is a deficient number, since it is larger than the sum of its proper divisors (4081264749).

12221333331 is a wasteful number, since it uses less digits than its factorization.

12221333331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871745.

The product of its digits is 1944, while the sum is 24.

Adding to 12221333331 its reverse (13333312221), we get a palindrome (25554645552).

The spelling of 12221333331 in words is "twelve billion, two hundred twenty-one million, three hundred thirty-three thousand, three hundred thirty-one".