1220311322132 has 48 divisors (see below), whose sum is σ = 2482297104000. Its totient is φ = 514062526464.

The previous prime is 1220311322107. The next prime is 1220311322143. The reversal of 1220311322132 is 2312231130221.

It is a junction number, because it is equal to n+sod(n) for n = 1220311322098 and 1220311322107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14709344 + ... + 14792072.

It is an arithmetic number, because the mean of its divisors is an integer number (51714523000).

Almost surely, 2^{1220311322132} is an apocalyptic number.

It is an amenable number.

1220311322132 is an abundant number, since it is smaller than the sum of its proper divisors (1261985781868).

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

1220311322132 is a wasteful number, since it uses less digits than its factorization.

1220311322132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91728 (or 91726 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1220311322132 its reverse (2312231130221), we get a palindrome (3532542452353).

The spelling of 1220311322132 in words is "one trillion, two hundred twenty billion, three hundred eleven million, three hundred twenty-two thousand, one hundred thirty-two".