222121231424 has 28 divisors (see below), whose sum is σ = 441054744000. Its totient is φ = 110989327488.

The previous prime is 222121231399. The next prime is 222121231427. The reversal of 222121231424 is 424132121222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 222121231393 and 222121231402.

It is not an unprimeable number, because it can be changed into a prime (222121231427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013324 + ... + 1212875.

Almost surely, 2^222121231424 is an apocalyptic number.

It is an amenable number.

222121231424 is a deficient number, since it is larger than the sum of its proper divisors (218933512576).

222121231424 is a wasteful number, since it uses less digits than its factorization.

222121231424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227770 (or 2227760 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 222121231424 its reverse (424132121222), we get a palindrome (646253352646).

The spelling of 222121231424 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred thirty-one thousand, four hundred twenty-four".