20211222023 has 4 divisors (see below), whose sum is σ = 20212151808. Its totient is φ = 20210292240.

The previous prime is 20211221999. The next prime is 20211222037. The reversal of 20211222023 is 32022211202.

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 20211222023 - 2²⁴ = 20194444807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211221992 and 20211222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211222043) 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, 431486 + ... + 476027.

It is an arithmetic number, because the mean of its divisors is an integer number (5053037952).

Almost surely, 2^20211222023 is an apocalyptic number.

20211222023 is a deficient number, since it is larger than the sum of its proper divisors (929785).

20211222023 is an equidigital number, since it uses as much as digits as its factorization.

20211222023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929784.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20211222023 its reverse (32022211202), we get a palindrome (52233433225).

The spelling of 20211222023 in words is "twenty billion, two hundred eleven million, two hundred twenty-two thousand, twenty-three".