222220644531 has 8 divisors (see below), whose sum is σ = 296912762880. Its totient is φ = 147837811272.

The previous prime is 222220644521. The next prime is 222220644571. The reversal of 222220644531 is 135446022222.

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

It is not a de Polignac number, because 222220644531 - 2⁷ = 222220644403 is a prime.

It is a super-2 number, since 2×222220644531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222220644492 and 222220644501.

It is not an unprimeable number, because it can be changed into a prime (222220644521) 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, 77319595 + ... + 77322468.

It is an arithmetic number, because the mean of its divisors is an integer number (37114095360).

Almost surely, 2^222220644531 is an apocalyptic number.

222220644531 is a deficient number, since it is larger than the sum of its proper divisors (74692118349).

222220644531 is a wasteful number, since it uses less digits than its factorization.

222220644531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154642545.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 222220644531 its reverse (135446022222), we get a palindrome (357666666753).

The spelling of 222220644531 in words is "two hundred twenty-two billion, two hundred twenty million, six hundred forty-four thousand, five hundred thirty-one".