21225222333 has 24 divisors (see below), whose sum is σ = 35103284736. Its totient is φ = 12106260000.

The previous prime is 21225222289. The next prime is 21225222341. The reversal of 21225222333 is 33322252212.

It is not a de Polignac number, because 21225222333 - 2⁶ = 21225222269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21225222297 and 21225222306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21225222133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277293 + ... + 345458.

It is an arithmetic number, because the mean of its divisors is an integer number (1462636864).

Almost surely, 2^21225222333 is an apocalyptic number.

It is an amenable number.

21225222333 is a deficient number, since it is larger than the sum of its proper divisors (13878062403).

21225222333 is a wasteful number, since it uses less digits than its factorization.

21225222333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623305 (or 623302 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

Adding to 21225222333 its reverse (33322252212), we get a palindrome (54547474545).

The spelling of 21225222333 in words is "twenty-one billion, two hundred twenty-five million, two hundred twenty-two thousand, three hundred thirty-three".