212420983 has 2 divisors, whose sum is σ = 212420984. Its totient is φ = 212420982.

The previous prime is 212420977. The next prime is 212421019. The reversal of 212420983 is 389024212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212420983 - 2⁵ = 212420951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212420183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106210491 + 106210492.

It is an arithmetic number, because the mean of its divisors is an integer number (106210492).

Almost surely, 2^212420983 is an apocalyptic number.

212420983 is a deficient number, since it is larger than the sum of its proper divisors (1).

212420983 is an equidigital number, since it uses as much as digits as its factorization.

212420983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 212420983 is about 14574.6692243769. The cubic root of 212420983 is about 596.6676217262.

The spelling of 212420983 in words is "two hundred twelve million, four hundred twenty thousand, nine hundred eighty-three".