21233222023 has 12 divisors (see below), whose sum is σ = 23526897240. Its totient is φ = 19144079136.

The previous prime is 21233222009. The next prime is 21233222033. The reversal of 21233222023 is 32022233212.

It is not a de Polignac number, because 21233222023 - 2⁵ = 21233221991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21233221985 and 21233222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233222033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1453668 + ... + 1468201.

It is an arithmetic number, because the mean of its divisors is an integer number (1960574770).

Almost surely, 2^21233222023 is an apocalyptic number.

21233222023 is a deficient number, since it is larger than the sum of its proper divisors (2293675217).

21233222023 is a wasteful number, since it uses less digits than its factorization.

21233222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921938 (or 2921925 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21233222023 its reverse (32022233212), we get a palindrome (53255455235).

The spelling of 21233222023 in words is "twenty-one billion, two hundred thirty-three million, two hundred twenty-two thousand, twenty-three".