212221322023 has 4 divisors (see below), whose sum is σ = 221448336048. Its totient is φ = 202994308000.

The previous prime is 212221321999. The next prime is 212221322101. The reversal of 212221322023 is 320223122212.

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 212221322023 - 2³³ = 203631387431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212221321985 and 212221322003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221328023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4613506978 + ... + 4613507023.

It is an arithmetic number, because the mean of its divisors is an integer number (55362084012).

Almost surely, 2^212221322023 is an apocalyptic number.

212221322023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212221322023 is a deficient number, since it is larger than the sum of its proper divisors (9227014025).

212221322023 is an equidigital number, since it uses as much as digits as its factorization.

212221322023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9227014024.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212221322023 its reverse (320223122212), we get a palindrome (532444444235).

The spelling of 212221322023 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty-two thousand, twenty-three".