22231021033 has 4 divisors (see below), whose sum is σ = 23941099588. Its totient is φ = 20520942480.

The previous prime is 22231020997. The next prime is 22231021037. The reversal of 22231021033 is 33012013222.

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 7977526489 + 14253494544 = 89317^2 + 119388^2 .

It is a cyclic number.

It is not a de Polignac number, because 22231021033 - 2⁹ = 22231020521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22231021033.

It is not an unprimeable number, because it can be changed into a prime (22231021037) 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, 855039258 + ... + 855039283.

It is an arithmetic number, because the mean of its divisors is an integer number (5985274897).

Almost surely, 2^22231021033 is an apocalyptic number.

It is an amenable number.

22231021033 is a deficient number, since it is larger than the sum of its proper divisors (1710078555).

22231021033 is a wasteful number, since it uses less digits than its factorization.

22231021033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710078554.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22231021033 its reverse (33012013222), we get a palindrome (55243034255).

The spelling of 22231021033 in words is "twenty-two billion, two hundred thirty-one million, twenty-one thousand, thirty-three".