222220310331 has 4 divisors (see below), whose sum is σ = 296293747112. Its totient is φ = 148146873552.

The previous prime is 222220310297. The next prime is 222220310341. The reversal of 222220310331 is 133013022222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 222220310331 - 2⁹ = 222220309819 is a prime.

It is a super-2 number, since 2×222220310331² (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 = 222220310298 and 222220310307.

It is not an unprimeable number, because it can be changed into a prime (222220310341) 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, 37036718386 + ... + 37036718391.

It is an arithmetic number, because the mean of its divisors is an integer number (74073436778).

Almost surely, 2^222220310331 is an apocalyptic number.

222220310331 is a deficient number, since it is larger than the sum of its proper divisors (74073436781).

222220310331 is an equidigital number, since it uses as much as digits as its factorization.

222220310331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74073436780.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 222220310331 its reverse (133013022222), we get a palindrome (355233332553).

The spelling of 222220310331 in words is "two hundred twenty-two billion, two hundred twenty million, three hundred ten thousand, three hundred thirty-one".