131212213110 has 192 divisors, whose sum is σ = 387070894080. Its totient is φ = 30556880640.

The previous prime is 131212213091. The next prime is 131212213133. The reversal of 131212213110 is 11312212131.

131212213110 is a `hidden beast` number, since 13 + 121 + 221 + 311 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2871099 + ... + 2916441.

It is an arithmetic number, because the mean of its divisors is an integer number (2015994240).

Almost surely, 2^131212213110 is an apocalyptic number.

131212213110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131212213110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193535447040).

131212213110 is an abundant number, since it is smaller than the sum of its proper divisors (255858680970).

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

131212213110 is a wasteful number, since it uses less digits than its factorization.

131212213110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45483 (or 45480 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131212213110 its reverse (11312212131), we get a palindrome (142524425241).

The spelling of 131212213110 in words is "one hundred thirty-one billion, two hundred twelve million, two hundred thirteen thousand, one hundred ten".