212215260 has 48 divisors (see below), whose sum is σ = 597516192. Its totient is φ = 56275200.

The previous prime is 212215253. The next prime is 212215291. The reversal of 212215260 is 62512212.

It is a happy number.

212215260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090 + ... + 20630.

It is an arithmetic number, because the mean of its divisors is an integer number (12448254).

Almost surely, 2^212215260 is an apocalyptic number.

212215260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212215260 is an abundant number, since it is smaller than the sum of its proper divisors (385300932).

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

212215260 is a wasteful number, since it uses less digits than its factorization.

212215260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19734 (or 19732 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 212215260 is about 14567.6099618297. The cubic root of 212215260 is about 596.4749416079.

Adding to 212215260 its reverse (62512212), we get a palindrome (274727472).

It can be divided in two parts, 2122152 and 60, that added together give a palindrome (2122212).

The spelling of 212215260 in words is "two hundred twelve million, two hundred fifteen thousand, two hundred sixty".