212393443 has 2 divisors, whose sum is σ = 212393444. Its totient is φ = 212393442.

The previous prime is 212393411. The next prime is 212393453. The reversal of 212393443 is 344393212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212393443 - 2⁵ = 212393411 is a prime.

It is a super-2 number, since 2×212393443² = 90221949258788498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212393453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106196721 + 106196722.

It is an arithmetic number, because the mean of its divisors is an integer number (106196722).

Almost surely, 2^212393443 is an apocalyptic number.

212393443 is a deficient number, since it is larger than the sum of its proper divisors (1).

212393443 is an equidigital number, since it uses as much as digits as its factorization.

212393443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 31.

The square root of 212393443 is about 14573.7244038715. The cubic root of 212393443 is about 596.6418349822.

The spelling of 212393443 in words is "two hundred twelve million, three hundred ninety-three thousand, four hundred forty-three".