212123352 has 96 divisors (see below), whose sum is σ = 627214320. Its totient is φ = 59592960.

The previous prime is 212123347. The next prime is 212123357. The reversal of 212123352 is 253321212.

It is an interprime number because it is at equal distance from previous prime (212123347) and next prime (212123357).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212123357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70258 + ... + 73214.

Almost surely, 2^212123352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212123352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313607160).

212123352 is an abundant number, since it is smaller than the sum of its proper divisors (415090968).

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

212123352 is a wasteful number, since it uses less digits than its factorization.

212123352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041 (or 3030 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 212123352 is about 14564.4550876440. The cubic root of 212123352 is about 596.3888203507.

Adding to 212123352 its reverse (253321212), we get a palindrome (465444564).

The spelling of 212123352 in words is "two hundred twelve million, one hundred twenty-three thousand, three hundred fifty-two".