1221222430124 has 24 divisors (see below), whose sum is σ = 2150485122240. Its totient is φ = 606798927504.

The previous prime is 1221222430123. The next prime is 1221222430139. The reversal of 1221222430124 is 4210342221221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1221222430093 and 1221222430102.

It is not an unprimeable number, because it can be changed into a prime (1221222430121) 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, 6174227 + ... + 6368949.

It is an arithmetic number, because the mean of its divisors is an integer number (89603546760).

Almost surely, 2^{1221222430124} is an apocalyptic number.

It is an amenable number.

1221222430124 is a deficient number, since it is larger than the sum of its proper divisors (929262692116).

1221222430124 is a wasteful number, since it uses less digits than its factorization.

1221222430124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204509 (or 204507 counting only the distinct ones).

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

Adding to 1221222430124 its reverse (4210342221221), we get a palindrome (5431564651345).

The spelling of 1221222430124 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, four hundred thirty thousand, one hundred twenty-four".