11331131311211 has 16 divisors (see below), whose sum is σ = 12226054528800. Its totient is φ = 10466390016000.

The previous prime is 11331131311207. The next prime is 11331131311217. The reversal of 11331131311211 is 11211313113311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11331131311211 - 2² = 11331131311207 is a prime.

It is a super-2 number, since 2×11331131311211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331131311217) 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, 3295526 + ... + 5789883.

It is an arithmetic number, because the mean of its divisors is an integer number (764128408050).

Almost surely, 2^{11331131311211} is an apocalyptic number.

11331131311211 is a deficient number, since it is larger than the sum of its proper divisors (894923217589).

11331131311211 is a wasteful number, since it uses less digits than its factorization.

11331131311211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9087070.

The product of its digits is 162, while the sum is 23.

Adding to 11331131311211 its reverse (11211313113311), we get a palindrome (22542444424522).

The spelling of 11331131311211 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred eleven thousand, two hundred eleven".