212103320 has 96 divisors (see below), whose sum is σ = 565079760. Its totient is φ = 71174400.

The previous prime is 212103317. The next prime is 212103329. The reversal of 212103320 is 23301212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212103295 and 212103304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61235 + ... + 64605.

Almost surely, 2^212103320 is an apocalyptic number.

212103320 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 212103320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282539880).

212103320 is an abundant number, since it is smaller than the sum of its proper divisors (352976440).

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

212103320 is a wasteful number, since it uses less digits than its factorization.

212103320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417 (or 3402 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 212103320 is about 14563.7673697433. The cubic root of 212103320 is about 596.3700463106.

Adding to 212103320 its reverse (23301212), we get a palindrome (235404532).

The spelling of 212103320 in words is "two hundred twelve million, one hundred three thousand, three hundred twenty".