123331131220011 has 48 divisors (see below), whose sum is σ = 194400142819200. Its totient is φ = 68943643042560.

The previous prime is 123331131219931. The next prime is 123331131220039. The reversal of 123331131220011 is 110022131133321.

It is not a de Polignac number, because 123331131220011 - 2¹⁰ = 123331131218987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123331131224011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1170786 + ... + 15749063.

It is an arithmetic number, because the mean of its divisors is an integer number (4050002975400).

Almost surely, 2^{123331131220011} is an apocalyptic number.

123331131220011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123331131220011 is a deficient number, since it is larger than the sum of its proper divisors (71069011599189).

123331131220011 is a wasteful number, since it uses less digits than its factorization.

123331131220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16921196 (or 16921183 counting only the distinct ones).

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

Adding to 123331131220011 its reverse (110022131133321), we get a palindrome (233353262353332).

The spelling of 123331131220011 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, one hundred thirty-one million, two hundred twenty thousand, eleven".