1212101224 has 16 divisors (see below), whose sum is σ = 2406377700. Its totient is φ = 570400512.

The previous prime is 1212101201. The next prime is 1212101237. The reversal of 1212101224 is 4221012121.

It can be written as a sum of positive squares in 2 ways, for example, as 1168409124 + 43692100 = 34182^2 + 6610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212101198 and 1212101207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4456119 + ... + 4456390.

Almost surely, 2^1212101224 is an apocalyptic number.

It is an amenable number.

1212101224 is a deficient number, since it is larger than the sum of its proper divisors (1194276476).

1212101224 is a wasteful number, since it uses less digits than its factorization.

1212101224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8912532 (or 8912528 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1212101224 is about 34815.2441324199. The cubic root of 1212101224 is about 1066.2187034771.

Adding to 1212101224 its reverse (4221012121), we get a palindrome (5433113345).

The spelling of 1212101224 in words is "one billion, two hundred twelve million, one hundred one thousand, two hundred twenty-four".