212268261 has 8 divisors (see below), whose sum is σ = 287248864. Its totient is φ = 139399920.

The previous prime is 212268187. The next prime is 212268269. The reversal of 212268261 is 162862212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212268261 - 2⁹ = 212267749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212268269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527830 + ... + 528231.

It is an arithmetic number, because the mean of its divisors is an integer number (35906108).

Almost surely, 2^212268261 is an apocalyptic number.

It is an amenable number.

212268261 is a deficient number, since it is larger than the sum of its proper divisors (74980603).

212268261 is a wasteful number, since it uses less digits than its factorization.

212268261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056131.

The product of its digits is 4608, while the sum is 30.

The square root of 212268261 is about 14569.4289867517. The cubic root of 212268261 is about 596.5245942371.

The spelling of 212268261 in words is "two hundred twelve million, two hundred sixty-eight thousand, two hundred sixty-one".