212068261 has 4 divisors (see below), whose sum is σ = 212121292. Its totient is φ = 212015232.

The previous prime is 212068223. The next prime is 212068279. The reversal of 212068261 is 162860212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119793025 + 92275236 = 10945^2 + 9606^2 .

It is a cyclic number.

It is not a de Polignac number, because 212068261 - 2⁷ = 212068133 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 (212063261) 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, 19980 + ... + 28693.

It is an arithmetic number, because the mean of its divisors is an integer number (53030323).

Almost surely, 2^212068261 is an apocalyptic number.

It is an amenable number.

212068261 is a deficient number, since it is larger than the sum of its proper divisors (53031).

212068261 is an equidigital number, since it uses as much as digits as its factorization.

212068261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53030.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 212068261 is about 14562.5636822642. The cubic root of 212068261 is about 596.3371860839.

The spelling of 212068261 in words is "two hundred twelve million, sixty-eight thousand, two hundred sixty-one".