1131212221232 has 40 divisors (see below), whose sum is σ = 2341511592000. Its totient is φ = 527839785792.

The previous prime is 1131212221199. The next prime is 1131212221261. The reversal of 1131212221232 is 2321222121311.

It is a junction number, because it is equal to n+sod(n) for n = 1131212221198 and 1131212221207.

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, 27748982 + ... + 27789717.

It is an arithmetic number, because the mean of its divisors is an integer number (58537789800).

Almost surely, 2^{1131212221232} is an apocalyptic number.

It is an amenable number.

1131212221232 is an abundant number, since it is smaller than the sum of its proper divisors (1210299370768).

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

1131212221232 is a wasteful number, since it uses less digits than its factorization.

1131212221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55538793 (or 55538787 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 1131212221232 its reverse (2321222121311), we get a palindrome (3452434342543).

The spelling of 1131212221232 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred thirty-two".