212000023 has 4 divisors (see below), whose sum is σ = 212504008. Its totient is φ = 211496040.

The previous prime is 212000021. The next prime is 212000029. The reversal of 212000023 is 320000212.

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

It is a cyclic number.

It is not a de Polignac number, because 212000023 - 2¹ = 212000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211999973 and 212000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000021) 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, 251361 + ... + 252202.

It is an arithmetic number, because the mean of its divisors is an integer number (53126002).

Almost surely, 2^212000023 is an apocalyptic number.

212000023 is a deficient number, since it is larger than the sum of its proper divisors (503985).

212000023 is an equidigital number, since it uses as much as digits as its factorization.

212000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503984.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 212000023 is about 14560.2205683843. The cubic root of 212000023 is about 596.2732173377.

Adding to 212000023 its reverse (320000212), we get a palindrome (532000235).

The spelling of 212000023 in words is "two hundred twelve million, twenty-three", and thus it is an aban number.