1131213322011 has 16 divisors (see below), whose sum is σ = 1512668899584. Its totient is φ = 751953005664.

The previous prime is 1131213322007. The next prime is 1131213322081. The reversal of 1131213322011 is 1102233121311.

It is not a de Polignac number, because 1131213322011 - 2² = 1131213322007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131213322081) 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, 1120605 + ... + 1875681.

It is an arithmetic number, because the mean of its divisors is an integer number (94541806224).

Almost surely, 2^{1131213322011} is an apocalyptic number.

1131213322011 is a deficient number, since it is larger than the sum of its proper divisors (381455577573).

1131213322011 is an equidigital number, since it uses as much as digits as its factorization.

1131213322011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756530.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1131213322011 its reverse (1102233121311), we get a palindrome (2233446443322).

The spelling of 1131213322011 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, three hundred twenty-two thousand, eleven".