212242023 has 24 divisors (see below), whose sum is σ = 358520448. Its totient is φ = 118459152.

The previous prime is 212242021. The next prime is 212242033. The reversal of 212242023 is 320242212.

It is not a de Polignac number, because 212242023 - 2¹ = 212242021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212241987 and 212242005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212242021) 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, 36465 + ... + 41882.

It is an arithmetic number, because the mean of its divisors is an integer number (14938352).

Almost surely, 2^212242023 is an apocalyptic number.

212242023 is a deficient number, since it is larger than the sum of its proper divisors (146278425).

212242023 is a wasteful number, since it uses less digits than its factorization.

212242023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78403 (or 78400 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 212242023 is about 14568.5285118299. The cubic root of 212242023 is about 596.5000148721.

Adding to 212242023 its reverse (320242212), we get a palindrome (532484235).

The spelling of 212242023 in words is "two hundred twelve million, two hundred forty-two thousand, twenty-three".