212198093 has 4 divisors (see below), whose sum is σ = 212889600. Its totient is φ = 211506588.

The previous prime is 212198089. The next prime is 212198101. The reversal of 212198093 is 390891212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212198093 - 2² = 212198089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212198893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345293 + ... + 345906.

It is an arithmetic number, because the mean of its divisors is an integer number (53222400).

Almost surely, 2^212198093 is an apocalyptic number.

It is an amenable number.

212198093 is a deficient number, since it is larger than the sum of its proper divisors (691507).

212198093 is an equidigital number, since it uses as much as digits as its factorization.

212198093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691506.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 212198093 is about 14567.0207317763. The cubic root of 212198093 is about 596.4588573711.

The spelling of 212198093 in words is "two hundred twelve million, one hundred ninety-eight thousand, ninety-three".