1220323012132 has 72 divisors (see below), whose sum is σ = 2631094099200. Its totient is φ = 492093778176.

The previous prime is 1220323012093. The next prime is 1220323012159. The reversal of 1220323012132 is 2312103230221.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12342469 + ... + 12440947.

It is an arithmetic number, because the mean of its divisors is an integer number (36542973600).

Almost surely, 2^{1220323012132} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220323012132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315547049600).

1220323012132 is an abundant number, since it is smaller than the sum of its proper divisors (1410771087068).

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

1220323012132 is a wasteful number, since it uses less digits than its factorization.

1220323012132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102233 (or 102224 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1220323012132 its reverse (2312103230221), we get a palindrome (3532426242353).

The spelling of 1220323012132 in words is "one trillion, two hundred twenty billion, three hundred twenty-three million, twelve thousand, one hundred thirty-two".