212120323 has 4 divisors (see below), whose sum is σ = 213997608. Its totient is φ = 210243040.

The previous prime is 212120291. The next prime is 212120327. The reversal of 212120323 is 323021212.

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 212120323 - 2⁵ = 212120291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212120297 and 212120306.

It is not an unprimeable number, because it can be changed into a prime (212120327) 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, 938473 + ... + 938698.

It is an arithmetic number, because the mean of its divisors is an integer number (53499402).

Almost surely, 2^212120323 is an apocalyptic number.

212120323 is a deficient number, since it is larger than the sum of its proper divisors (1877285).

212120323 is a wasteful number, since it uses less digits than its factorization.

212120323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877284.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 212120323 is about 14564.3511012334. The cubic root of 212120323 is about 596.3859816403.

Adding to 212120323 its reverse (323021212), we get a palindrome (535141535).

The spelling of 212120323 in words is "two hundred twelve million, one hundred twenty thousand, three hundred twenty-three".