222320145531 has 16 divisors (see below), whose sum is σ = 329476170240. Its totient is φ = 132197226720.

The previous prime is 222320145469. The next prime is 222320145559. The reversal of 222320145531 is 135541023222.

222320145531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222320145531 - 2²⁶ = 222253036667 is a prime.

It is a super-2 number, since 2×222320145531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222320145031) 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 15 ways as a sum of consecutive naturals, for example, 63554611 + ... + 63558108.

It is an arithmetic number, because the mean of its divisors is an integer number (20592260640).

Almost surely, 2^222320145531 is an apocalyptic number.

222320145531 is a deficient number, since it is larger than the sum of its proper divisors (107156024709).

222320145531 is a wasteful number, since it uses less digits than its factorization.

222320145531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127112786.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 222320145531 its reverse (135541023222), we get a palindrome (357861168753).

The spelling of 222320145531 in words is "two hundred twenty-two billion, three hundred twenty million, one hundred forty-five thousand, five hundred thirty-one".