1131221332233 has 16 divisors (see below), whose sum is σ = 1676618260800. Its totient is φ = 753816892320.

The previous prime is 1131221332231. The next prime is 1131221332237. The reversal of 1131221332233 is 3322331221311.

1131221332233 is a `hidden beast` number, since 1 + 1 + 312 + 21 + 3 + 322 + 3 + 3 = 666.

It is not a de Polignac number, because 1131221332233 - 2¹ = 1131221332231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1131221332197 and 1131221332206.

It is not an unprimeable number, because it can be changed into a prime (1131221332231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9122343 + ... + 9245516.

It is an arithmetic number, because the mean of its divisors is an integer number (104788641300).

Almost surely, 2^{1131221332233} is an apocalyptic number.

It is an amenable number.

1131221332233 is a deficient number, since it is larger than the sum of its proper divisors (545396928567).

1131221332233 is a wasteful number, since it uses less digits than its factorization.

1131221332233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18370149 (or 18370143 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1131221332233 its reverse (3322331221311), we get a palindrome (4453552553544).

The spelling of 1131221332233 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-one million, three hundred thirty-two thousand, two hundred thirty-three".