212300261 has 4 divisors (see below), whose sum is σ = 212860800. Its totient is φ = 211739724.

The previous prime is 212300239. The next prime is 212300273. The reversal of 212300261 is 162003212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212300261 - 2⁶ = 212300197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212300861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279701 + ... + 280458.

It is an arithmetic number, because the mean of its divisors is an integer number (53215200).

Almost surely, 2^212300261 is an apocalyptic number.

It is an amenable number.

212300261 is a deficient number, since it is larger than the sum of its proper divisors (560539).

212300261 is an equidigital number, since it uses as much as digits as its factorization.

212300261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560538.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 212300261 is about 14570.5271352824. The cubic root of 212300261 is about 596.5545686161.

Adding to 212300261 its reverse (162003212), we get a palindrome (374303473).

The spelling of 212300261 in words is "two hundred twelve million, three hundred thousand, two hundred sixty-one".