212313232120 has 128 divisors (see below), whose sum is σ = 538242978240. Its totient is φ = 74709872640.

The previous prime is 212313232111. The next prime is 212313232121. The reversal of 212313232120 is 21232313212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212313232091 and 212313232100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313232121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1640002 + ... + 1764718.

Almost surely, 2^212313232120 is an apocalyptic number.

212313232120 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 212313232120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269121489120).

212313232120 is an abundant number, since it is smaller than the sum of its proper divisors (325929746120).

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

212313232120 is a wasteful number, since it uses less digits than its factorization.

212313232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124865 (or 124861 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212313232120 its reverse (21232313212), we get a palindrome (233545545332).

The spelling of 212313232120 in words is "two hundred twelve billion, three hundred thirteen million, two hundred thirty-two thousand, one hundred twenty".