22333220221 has 16 divisors (see below), whose sum is σ = 24319975680. Its totient is φ = 20385711360.

The previous prime is 22333220197. The next prime is 22333220227. The reversal of 22333220221 is 12202233322.

It is a cyclic number.

It is not a de Polignac number, because 22333220221 - 2²¹ = 22331123069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22333220192 and 22333220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22333220227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 627576 + ... + 662206.

It is an arithmetic number, because the mean of its divisors is an integer number (1519998480).

Almost surely, 2^22333220221 is an apocalyptic number.

It is an amenable number.

22333220221 is a deficient number, since it is larger than the sum of its proper divisors (1986755459).

22333220221 is a wasteful number, since it uses less digits than its factorization.

22333220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35196.

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

Adding to 22333220221 its reverse (12202233322), we get a palindrome (34535453543).

The spelling of 22333220221 in words is "twenty-two billion, three hundred thirty-three million, two hundred twenty thousand, two hundred twenty-one".