1212604969600 has 96 divisors (see below), whose sum is σ = 3125753108640. Its totient is φ = 463953177600.

The previous prime is 1212604969567. The next prime is 1212604969603. The reversal of 1212604969600 is 69694062121.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (1212604969603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8164206 + ... + 8311405.

It is an arithmetic number, because the mean of its divisors is an integer number (32559928215).

Almost surely, 2^{1212604969600} is an apocalyptic number.

1212604969600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212604969600 is an abundant number, since it is smaller than the sum of its proper divisors (1913148139040).

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

1212604969600 is a wasteful number, since it uses less digits than its factorization.

1212604969600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16475658 (or 16475641 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 1212604969600 in words is "one trillion, two hundred twelve billion, six hundred four million, nine hundred sixty-nine thousand, six hundred".