212021122223 has 8 divisors (see below), whose sum is σ = 224497571760. Its totient is φ = 199545185920.

The previous prime is 212021122177. The next prime is 212021122259. The reversal of 212021122223 is 322221120212.

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

It is a cyclic number.

It is not a de Polignac number, because 212021122223 - 2¹⁰ = 212021121199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021122195 and 212021122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021124223) 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, 1011668 + ... + 1203126.

It is an arithmetic number, because the mean of its divisors is an integer number (28062196470).

Almost surely, 2^212021122223 is an apocalyptic number.

212021122223 is a deficient number, since it is larger than the sum of its proper divisors (12476449537).

212021122223 is a wasteful number, since it uses less digits than its factorization.

212021122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256617.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212021122223 its reverse (322221120212), we get a palindrome (534242242435).

The spelling of 212021122223 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-three".