1212774717952 has 60 divisors (see below), whose sum is σ = 2818802138130. Its totient is φ = 519760582656.

The previous prime is 1212774717937. The next prime is 1212774717953. The reversal of 1212774717952 is 2597174772121.

It can be written as a sum of positive squares in only one way, i.e., 1077244713216 + 135530004736 = 1037904^2 + 368144^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212774717893 and 1212774717902.

It is not an unprimeable number, because it can be changed into a prime (1212774717953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24145327 + ... + 24195502.

Almost surely, 2^{1212774717952} is an apocalyptic number.

It is an amenable number.

1212774717952 is an abundant number, since it is smaller than the sum of its proper divisors (1606027420178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212774717952 is an frugal number, since it uses more digits than its factorization.

1212774717952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48340861 (or 48340838 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 55.

The spelling of 1212774717952 in words is "one trillion, two hundred twelve billion, seven hundred seventy-four million, seven hundred seventeen thousand, nine hundred fifty-two".