222320145424 has 40 divisors (see below), whose sum is σ = 469751461760. Its totient is φ = 101310438528.

The previous prime is 222320145409. The next prime is 222320145433. The reversal of 222320145424 is 424541023222.

It is a happy number.

It is a super-2 number, since 2×222320145424² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6748422 + ... + 6781285.

It is an arithmetic number, because the mean of its divisors is an integer number (11743786544).

Almost surely, 2^222320145424 is an apocalyptic number.

It is an amenable number.

222320145424 is an abundant number, since it is smaller than the sum of its proper divisors (247431316336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222320145424 is a wasteful number, since it uses less digits than its factorization.

222320145424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13529807 (or 13529801 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 222320145424 its reverse (424541023222), we get a palindrome (646861168646).

The spelling of 222320145424 in words is "two hundred twenty-two billion, three hundred twenty million, one hundred forty-five thousand, four hundred twenty-four".