1131236321226 has 96 divisors (see below), whose sum is σ = 2582407263744. Its totient is φ = 329855961600.

The previous prime is 1131236321213. The next prime is 1131236321233. The reversal of 1131236321226 is 6221236321311.

It is a super-2 number, since 2×1131236321226² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1912615 + ... + 2433221.

It is an arithmetic number, because the mean of its divisors is an integer number (26900075664).

Almost surely, 2^{1131236321226} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131236321226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291203631872).

1131236321226 is an abundant number, since it is smaller than the sum of its proper divisors (1451170942518).

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

1131236321226 is a wasteful number, since it uses less digits than its factorization.

1131236321226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520748 (or 520737 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The spelling of 1131236321226 in words is "one trillion, one hundred thirty-one billion, two hundred thirty-six million, three hundred twenty-one thousand, two hundred twenty-six".