212373613452 has 384 divisors, whose sum is σ = 678387548160. Its totient is φ = 49929384960.

The previous prime is 212373613447. The next prime is 212373613477. The reversal of 212373613452 is 254316373212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 212373613452.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 154677838 + ... + 154679210.

It is an arithmetic number, because the mean of its divisors is an integer number (1766634240).

Almost surely, 2^212373613452 is an apocalyptic number.

212373613452 is a gapful number since it is divisible by the number (22) 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 212373613452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339193774080).

212373613452 is an abundant number, since it is smaller than the sum of its proper divisors (466013934708).

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

212373613452 is a wasteful number, since it uses less digits than its factorization.

212373613452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653 (or 1651 counting only the distinct ones).

The product of its digits is 181440, while the sum is 39.

Adding to 212373613452 its reverse (254316373212), we get a palindrome (466689986664).

The spelling of 212373613452 in words is "two hundred twelve billion, three hundred seventy-three million, six hundred thirteen thousand, four hundred fifty-two".