21022212233 has 8 divisors (see below), whose sum is σ = 23029280640. Its totient is φ = 19031136880.

The previous prime is 21022212227. The next prime is 21022212307. The reversal of 21022212233 is 33221222012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21022212233 - 2¹⁴ = 21022195849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022215233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3995510 + ... + 4000767.

It is an arithmetic number, because the mean of its divisors is an integer number (2878660080).

Almost surely, 2^21022212233 is an apocalyptic number.

It is an amenable number.

21022212233 is a deficient number, since it is larger than the sum of its proper divisors (2007068407).

21022212233 is a wasteful number, since it uses less digits than its factorization.

21022212233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996527.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21022212233 its reverse (33221222012), we get a palindrome (54243434245).

The spelling of 21022212233 in words is "twenty-one billion, twenty-two million, two hundred twelve thousand, two hundred thirty-three".