1212224512 has 22 divisors (see below), whose sum is σ = 2423267258. Its totient is φ = 606111744.

The previous prime is 1212224509. The next prime is 1212224521. The reversal of 1212224512 is 2154222121.

It can be written as a sum of positive squares in only one way, i.e., 1144062976 + 68161536 = 33824^2 + 8256^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590883 + ... + 592930.

Almost surely, 2^1212224512 is an apocalyptic number.

It is an amenable number.

1212224512 is a deficient number, since it is larger than the sum of its proper divisors (1211042746).

1212224512 is an equidigital number, since it uses as much as digits as its factorization.

1212224512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183833 (or 1183815 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 1212224512 is about 34817.0146910961. The cubic root of 1212224512 is about 1066.2548521398.

Adding to 1212224512 its reverse (2154222121), we get a palindrome (3366446633).

The spelling of 1212224512 in words is "one billion, two hundred twelve million, two hundred twenty-four thousand, five hundred twelve".