1233121231311 has 8 divisors (see below), whose sum is σ = 1644218760960. Its totient is φ = 822052261272.

The previous prime is 1233121231273. The next prime is 1233121231319. The reversal of 1233121231311 is 1131321213321.

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

It is not a de Polignac number, because 1233121231311 - 2⁹ = 1233121230799 is a prime.

It is a super-2 number, since 2×1233121231311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233121231319) 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, 7038951 + ... + 7212008.

It is an arithmetic number, because the mean of its divisors is an integer number (205527345120).

Almost surely, 2^{1233121231311} is an apocalyptic number.

1233121231311 is a deficient number, since it is larger than the sum of its proper divisors (411097529649).

1233121231311 is a wasteful number, since it uses less digits than its factorization.

1233121231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14279805.

The product of its digits is 648, while the sum is 24.

Adding to 1233121231311 its reverse (1131321213321), we get a palindrome (2364442444632).

The spelling of 1233121231311 in words is "one trillion, two hundred thirty-three billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred eleven".