212468261 has 8 divisors (see below), whose sum is σ = 225952920. Its totient is φ = 199093248.

The previous prime is 212468233. The next prime is 212468287. The reversal of 212468261 is 162864212.

It can be written as a sum of positive squares in 4 ways, for example, as 109851361 + 102616900 = 10481^2 + 10130^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 212468261 - 2¹⁰ = 212467237 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 (212468561) 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, 23396 + ... + 31181.

It is an arithmetic number, because the mean of its divisors is an integer number (28244115).

Almost surely, 2^212468261 is an apocalyptic number.

It is an amenable number.

212468261 is a deficient number, since it is larger than the sum of its proper divisors (13484659).

212468261 is a wasteful number, since it uses less digits than its factorization.

212468261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54823.

The product of its digits is 9216, while the sum is 32.

The square root of 212468261 is about 14576.2910577417. The cubic root of 212468261 is about 596.7118847095.

The spelling of 212468261 in words is "two hundred twelve million, four hundred sixty-eight thousand, two hundred sixty-one".