212222493 has 24 divisors (see below), whose sum is σ = 362419200. Its totient is φ = 117087264.

The previous prime is 212222473. The next prime is 212222503. The reversal of 212222493 is 394222212.

It is not a de Polignac number, because 212222493 - 2⁶ = 212222429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56253 + ... + 59906.

It is an arithmetic number, because the mean of its divisors is an integer number (15100800).

Almost surely, 2^212222493 is an apocalyptic number.

It is an amenable number.

212222493 is a deficient number, since it is larger than the sum of its proper divisors (150196707).

212222493 is a wasteful number, since it uses less digits than its factorization.

212222493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116201 (or 116198 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 212222493 is about 14567.8582159492. The cubic root of 212222493 is about 596.4817181457.

The spelling of 212222493 in words is "two hundred twelve million, two hundred twenty-two thousand, four hundred ninety-three".