1131222123311 has 8 divisors (see below), whose sum is σ = 1292838015264. Its totient is φ = 969609414240.

The previous prime is 1131222123301. The next prime is 1131222123319. The reversal of 1131222123311 is 1133212221311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131222123311 - 2⁶ = 1131222123247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131222123319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21881 + ... + 1504301.

It is an arithmetic number, because the mean of its divisors is an integer number (161604751908).

Almost surely, 2^{1131222123311} is an apocalyptic number.

1131222123311 is a deficient number, since it is larger than the sum of its proper divisors (161615891953).

1131222123311 is a wasteful number, since it uses less digits than its factorization.

1131222123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591441.

The product of its digits is 432, while the sum is 23.

Adding to 1131222123311 its reverse (1133212221311), we get a palindrome (2264434344622).

The spelling of 1131222123311 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, one hundred twenty-three thousand, three hundred eleven".