212262443 has 2 divisors, whose sum is σ = 212262444. Its totient is φ = 212262442.

The previous prime is 212262431. The next prime is 212262497. The reversal of 212262443 is 344262212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212262443 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_11719502 and since 212262443 and 11719502 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (212262143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106131221 + 106131222.

It is an arithmetic number, because the mean of its divisors is an integer number (106131222).

Almost surely, 2^212262443 is an apocalyptic number.

212262443 is a deficient number, since it is larger than the sum of its proper divisors (1).

212262443 is an equidigital number, since it uses as much as digits as its factorization.

212262443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 26.

The square root of 212262443 is about 14569.2293207294. The cubic root of 212262443 is about 596.5191441967.

The spelling of 212262443 in words is "two hundred twelve million, two hundred sixty-two thousand, four hundred forty-three".