212220023 has 8 divisors (see below), whose sum is σ = 213781392. Its totient is φ = 210663936.

The previous prime is 212220013. The next prime is 212220031. The reversal of 212220023 is 320022212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212220023 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 (212220013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112736 + ... + 114602.

It is an arithmetic number, because the mean of its divisors is an integer number (26722674).

Almost surely, 2^212220023 is an apocalyptic number.

212220023 is a deficient number, since it is larger than the sum of its proper divisors (1561369).

212220023 is a wasteful number, since it uses less digits than its factorization.

212220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 212220023 is about 14567.7734400285. The cubic root of 212220023 is about 596.4794040405.

Adding to 212220023 its reverse (320022212), we get a palindrome (532242235).

The spelling of 212220023 in words is "two hundred twelve million, two hundred twenty thousand, twenty-three".