1212104666560 has 56 divisors (see below), whose sum is σ = 2985852682080. Its totient is φ = 468123177984.

The previous prime is 1212104666533. The next prime is 1212104666561. The reversal of 1212104666560 is 656664012121.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212104666561) 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, 65298084 + ... + 65316643.

Almost surely, 2^{1212104666560} is an apocalyptic number.

1212104666560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212104666560 is an abundant number, since it is smaller than the sum of its proper divisors (1773748015520).

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

1212104666560 is a wasteful number, since it uses less digits than its factorization.

1212104666560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130614773 (or 130614763 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 1212104666560 its reverse (656664012121), we get a palindrome (1868768678681).

The spelling of 1212104666560 in words is "one trillion, two hundred twelve billion, one hundred four million, six hundred sixty-six thousand, five hundred sixty".