1131211020233 has 4 divisors (see below), whose sum is σ = 1292812594560. Its totient is φ = 969609445908.

The previous prime is 1131211020227. The next prime is 1131211020259. The reversal of 1131211020233 is 3320201121311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1131211020233 - 2⁸ = 1131211019977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131211020293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80800787153 + ... + 80800787166.

It is an arithmetic number, because the mean of its divisors is an integer number (323203148640).

Almost surely, 2^{1131211020233} is an apocalyptic number.

It is an amenable number.

1131211020233 is a deficient number, since it is larger than the sum of its proper divisors (161601574327).

1131211020233 is an equidigital number, since it uses as much as digits as its factorization.

1131211020233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161601574326.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1131211020233 its reverse (3320201121311), we get a palindrome (4451412141544).

The spelling of 1131211020233 in words is "one trillion, one hundred thirty-one billion, two hundred eleven million, twenty thousand, two hundred thirty-three".