1222422221224 has 8 divisors (see below), whose sum is σ = 2292041664810. Its totient is φ = 611211110608.

The previous prime is 1222422221203. The next prime is 1222422221231. The reversal of 1222422221224 is 4221222242221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 669258158724 + 553164062500 = 818082^2 + 743750^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1222422221192 and 1222422221201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76401388819 + ... + 76401388834.

Almost surely, 2^{1222422221224} is an apocalyptic number.

It is an amenable number.

1222422221224 is a deficient number, since it is larger than the sum of its proper divisors (1069619443586).

1222422221224 is a wasteful number, since it uses less digits than its factorization.

1222422221224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152802777659 (or 152802777655 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

Adding to 1222422221224 its reverse (4221222242221), we get a palindrome (5443644463445).

The spelling of 1222422221224 in words is "one trillion, two hundred twenty-two billion, four hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-four".