212993207 has 4 divisors (see below), whose sum is σ = 243420816. Its totient is φ = 182565600.

The previous prime is 212993191. The next prime is 212993227. The reversal of 212993207 is 702399212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212993207 - 2⁴ = 212993191 is a prime.

It is a super-2 number, since 2×212993207² = 90732212456289698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212993227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15213794 + ... + 15213807.

It is an arithmetic number, because the mean of its divisors is an integer number (60855204).

Almost surely, 2^212993207 is an apocalyptic number.

212993207 is a deficient number, since it is larger than the sum of its proper divisors (30427609).

212993207 is an equidigital number, since it uses as much as digits as its factorization.

212993207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30427608.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 212993207 is about 14594.2867931256. The cubic root of 212993207 is about 597.2029131788.

The spelling of 212993207 in words is "two hundred twelve million, nine hundred ninety-three thousand, two hundred seven".