212693401 has 2 divisors, whose sum is σ = 212693402. Its totient is φ = 212693400.

The previous prime is 212693339. The next prime is 212693417. The reversal of 212693401 is 104396212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182223001 + 30470400 = 13499^2 + 5520^2 .

It is a cyclic number.

It is not a de Polignac number, because 212693401 - 2²¹ = 210596249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212693401.

It is not a weakly prime, because it can be changed into another prime (212693101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106346700 + 106346701.

It is an arithmetic number, because the mean of its divisors is an integer number (106346701).

Almost surely, 2^212693401 is an apocalyptic number.

It is an amenable number.

212693401 is a deficient number, since it is larger than the sum of its proper divisors (1).

212693401 is an equidigital number, since it uses as much as digits as its factorization.

212693401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 212693401 is about 14584.0118280259. The cubic root of 212693401 is about 596.9225770249.

The spelling of 212693401 in words is "two hundred twelve million, six hundred ninety-three thousand, four hundred one".