212412461 has 2 divisors, whose sum is σ = 212412462. Its totient is φ = 212412460.

The previous prime is 212412451. The next prime is 212412491. The reversal of 212412461 is 164214212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204318436 + 8094025 = 14294^2 + 2845^2 .

It is a cyclic number.

It is not a de Polignac number, because 212412461 - 2⁶ = 212412397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212412451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106206230 + 106206231.

It is an arithmetic number, because the mean of its divisors is an integer number (106206231).

Almost surely, 2^212412461 is an apocalyptic number.

It is an amenable number.

212412461 is a deficient number, since it is larger than the sum of its proper divisors (1).

212412461 is an equidigital number, since it uses as much as digits as its factorization.

212412461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

The square root of 212412461 is about 14574.3768648955. The cubic root of 212412461 is about 596.6596424933.

Adding to 212412461 its reverse (164214212), we get a palindrome (376626673).

The spelling of 212412461 in words is "two hundred twelve million, four hundred twelve thousand, four hundred sixty-one".