2312121112100 has 36 divisors (see below), whose sum is σ = 5073677021700. Its totient is φ = 914456885760.

The previous prime is 2312121112099. The next prime is 2312121112151. The reversal of 2312121112100 is 12111212132.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 557985096256 + 1754136015844 = 746984^2 + 1324438^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129885545 + ... + 129903344.

It is an arithmetic number, because the mean of its divisors is an integer number (140935472825).

Almost surely, 2^{2312121112100} is an apocalyptic number.

2312121112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312121112100 is an abundant number, since it is smaller than the sum of its proper divisors (2761555909600).

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

2312121112100 is a wasteful number, since it uses less digits than its factorization.

2312121112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259788992 (or 259788985 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2312121112100 its reverse (12111212132), we get a palindrome (2324232324232).

The spelling of 2312121112100 in words is "two trillion, three hundred twelve billion, one hundred twenty-one million, one hundred twelve thousand, one hundred".