1220242100312 has 64 divisors (see below), whose sum is σ = 2316198447360. Its totient is φ = 602643600000.

The previous prime is 1220242100267. The next prime is 1220242100317. The reversal of 1220242100312 is 2130012420221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220242100317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197991743 + ... + 197997905.

It is an arithmetic number, because the mean of its divisors is an integer number (36190600740).

Almost surely, 2^{1220242100312} is an apocalyptic number.

It is an amenable number.

1220242100312 is a deficient number, since it is larger than the sum of its proper divisors (1095956347048).

1220242100312 is a wasteful number, since it uses less digits than its factorization.

1220242100312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7224 (or 7220 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1220242100312 its reverse (2130012420221), we get a palindrome (3350254520533).

The spelling of 1220242100312 in words is "one trillion, two hundred twenty billion, two hundred forty-two million, one hundred thousand, three hundred twelve".