23220212233 has 4 divisors (see below), whose sum is σ = 23227357968. Its totient is φ = 23213066500.

The previous prime is 23220212231. The next prime is 23220212251. The reversal of 23220212233 is 33221202232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23220212233 - 2¹ = 23220212231 is a prime.

It is a super-2 number, since 2×23220212233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23220212231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567991 + ... + 3574492.

It is an arithmetic number, because the mean of its divisors is an integer number (5806839492).

Almost surely, 2^23220212233 is an apocalyptic number.

It is an amenable number.

23220212233 is a deficient number, since it is larger than the sum of its proper divisors (7145735).

23220212233 is an equidigital number, since it uses as much as digits as its factorization.

23220212233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145734.

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

Adding to 23220212233 its reverse (33221202232), we get a palindrome (56441414465).

The spelling of 23220212233 in words is "twenty-three billion, two hundred twenty million, two hundred twelve thousand, two hundred thirty-three".