1220113312312 has 32 divisors (see below), whose sum is σ = 2297060791200. Its totient is φ = 607564693504.

The previous prime is 1220113312303. The next prime is 1220113312373. The reversal of 1220113312312 is 2132133110221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11032989 + ... + 11143027.

It is an arithmetic number, because the mean of its divisors is an integer number (71783149725).

Almost surely, 2^{1220113312312} is an apocalyptic number.

It is an amenable number.

1220113312312 is a deficient number, since it is larger than the sum of its proper divisors (1076947478888).

1220113312312 is a wasteful number, since it uses less digits than its factorization.

1220113312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115695 (or 115691 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1220113312312 its reverse (2132133110221), we get a palindrome (3352246422533).

The spelling of 1220113312312 in words is "one trillion, two hundred twenty billion, one hundred thirteen million, three hundred twelve thousand, three hundred twelve".