1220000243312 has 40 divisors (see below), whose sum is σ = 2400493296096. Its totient is φ = 600583274496.

The previous prime is 1220000243279. The next prime is 1220000243317. The reversal of 1220000243312 is 2133420000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220000243317) 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, 1736948 + ... + 2336019.

Almost surely, 2^{1220000243312} is an apocalyptic number.

It is an amenable number.

1220000243312 is a deficient number, since it is larger than the sum of its proper divisors (1180493052784).

1220000243312 is a wasteful number, since it uses less digits than its factorization.

1220000243312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073265 (or 4073259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1220000243312 its reverse (2133420000221), we get a palindrome (3353420243533).

The spelling of 1220000243312 in words is "one trillion, two hundred twenty billion, two hundred forty-three thousand, three hundred twelve".