1131321220122 has 48 divisors (see below), whose sum is σ = 2407217994720. Its totient is φ = 354385366272.

The previous prime is 1131321220103. The next prime is 1131321220157. The reversal of 1131321220122 is 2210221231311.

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, 647688 + ... + 1637724.

It is an arithmetic number, because the mean of its divisors is an integer number (50150374890).

Almost surely, 2^{1131321220122} is an apocalyptic number.

1131321220122 is an abundant number, since it is smaller than the sum of its proper divisors (1275896774598).

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

1131321220122 is a wasteful number, since it uses less digits than its factorization.

1131321220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990735 (or 990718 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1131321220122 its reverse (2210221231311), we get a palindrome (3341542451433).

The spelling of 1131321220122 in words is "one trillion, one hundred thirty-one billion, three hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".