221222232331 has 8 divisors (see below), whose sum is σ = 229261464720. Its totient is φ = 213210391968.

The previous prime is 221222232317. The next prime is 221222232349. The reversal of 221222232331 is 133232222122.

221222232331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 221222232331 - 2⁹ = 221222231819 is a prime.

It is a super-2 number, since 2×221222232331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221222232296 and 221222232305.

It is not an unprimeable number, because it can be changed into a prime (221222232131) 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, 6831561 + ... + 6863866.

It is an arithmetic number, because the mean of its divisors is an integer number (28657683090).

Almost surely, 2^221222232331 is an apocalyptic number.

221222232331 is a deficient number, since it is larger than the sum of its proper divisors (8039232389).

221222232331 is a wasteful number, since it uses less digits than its factorization.

221222232331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13696013.

The product of its digits is 3456, while the sum is 25.

Adding to 221222232331 its reverse (133232222122), we get a palindrome (354454454453).

The spelling of 221222232331 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred thirty-two thousand, three hundred thirty-one".