212313212100 has 288 divisors, whose sum is σ = 745351044480. Its totient is φ = 51417792000.

The previous prime is 212313212053. The next prime is 212313212147. The reversal of 212313212100 is 1212313212.

212313212100 is a `hidden beast` number, since 212 + 31 + 321 + 2 + 100 = 666.

It is an interprime number because it is at equal distance from previous prime (212313212053) and next prime (212313212147).

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

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, 35072674 + ... + 35078726.

It is an arithmetic number, because the mean of its divisors is an integer number (2588024460).

Almost surely, 2^212313212100 is an apocalyptic number.

212313212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212313212100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372675522240).

212313212100 is an abundant number, since it is smaller than the sum of its proper divisors (533037832380).

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

212313212100 is a wasteful number, since it uses less digits than its factorization.

212313212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7268 (or 7255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212313212100 its reverse (1212313212), we get a palindrome (213525525312).

The spelling of 212313212100 in words is "two hundred twelve billion, three hundred thirteen million, two hundred twelve thousand, one hundred".