231212121113300 has 36 divisors (see below), whose sum is σ = 501818157374016. Its totient is φ = 92468654056800.

The previous prime is 231212121113249. The next prime is 231212121113321. The reversal of 231212121113300 is 3311121212132.

It is a happy number.

It is a super-2 number, since 2×231212121113300² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201855902 + ... + 202998101.

Almost surely, 2^{231212121113300} is an apocalyptic number.

231212121113300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231212121113300 is an abundant number, since it is smaller than the sum of its proper divisors (270606036260716).

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

231212121113300 is a wasteful number, since it uses less digits than its factorization.

231212121113300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404859728 (or 404859721 counting only the distinct ones).

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

Adding to 231212121113300 its reverse (3311121212132), we get a palindrome (234523242325432).

The spelling of 231212121113300 in words is "two hundred thirty-one trillion, two hundred twelve billion, one hundred twenty-one million, one hundred thirteen thousand, three hundred".