23212220033 has 4 divisors (see below), whose sum is σ = 23233935060. Its totient is φ = 23190505008.

The previous prime is 23212220027. The next prime is 23212220051. The reversal of 23212220033 is 33002221232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8988556864 + 14223663169 = 94808^2 + 119263^2 .

It is a cyclic number.

It is not a de Polignac number, because 23212220033 - 2⁸ = 23212219777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23212219987 and 23212220014.

It is not an unprimeable number, because it can be changed into a prime (23212220533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10855910 + ... + 10858047.

It is an arithmetic number, because the mean of its divisors is an integer number (5808483765).

Almost surely, 2^23212220033 is an apocalyptic number.

It is an amenable number.

23212220033 is a deficient number, since it is larger than the sum of its proper divisors (21715027).

23212220033 is a wasteful number, since it uses less digits than its factorization.

23212220033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21715026.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23212220033 its reverse (33002221232), we get a palindrome (56214441265).

The spelling of 23212220033 in words is "twenty-three billion, two hundred twelve million, two hundred twenty thousand, thirty-three".