131233121111220 has 48 divisors (see below), whose sum is σ = 374385809669760. Its totient is φ = 34335206528896.

The previous prime is 131233121111207. The next prime is 131233121111233. The reversal of 131233121111220 is 22111121332131.

It is an interprime number because it is at equal distance from previous prime (131233121111207) and next prime (131233121111233).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20634135360 + ... + 20634141719.

It is an arithmetic number, because the mean of its divisors is an integer number (7799704368120).

Almost surely, 2^{131233121111220} is an apocalyptic number.

131233121111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131233121111220 is an abundant number, since it is smaller than the sum of its proper divisors (243152688558540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131233121111220 is a wasteful number, since it uses less digits than its factorization.

131233121111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41268277144 (or 41268277142 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 131233121111220 its reverse (22111121332131), we get a palindrome (153344242443351).

The spelling of 131233121111220 in words is "one hundred thirty-one trillion, two hundred thirty-three billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twenty".