212412451 has 2 divisors, whose sum is σ = 212412452. Its totient is φ = 212412450.

The previous prime is 212412413. The next prime is 212412461. The reversal of 212412451 is 154214212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212412451 - 2⁷ = 212412323 is a prime.

It is not a weakly prime, because it can be changed into another prime (212412461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106206225 + 106206226.

It is an arithmetic number, because the mean of its divisors is an integer number (106206226).

Almost surely, 2^212412451 is an apocalyptic number.

212412451 is a deficient number, since it is larger than the sum of its proper divisors (1).

212412451 is an equidigital number, since it uses as much as digits as its factorization.

212412451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 640, while the sum is 22.

The square root of 212412451 is about 14574.3765218276. The cubic root of 212412451 is about 596.6596331301.

Adding to 212412451 its reverse (154214212), we get a palindrome (366626663).

The spelling of 212412451 in words is "two hundred twelve million, four hundred twelve thousand, four hundred fifty-one".