21222211233 has 8 divisors (see below), whose sum is σ = 28297447200. Its totient is φ = 14147558048.

The previous prime is 21222211217. The next prime is 21222211267. The reversal of 21222211233 is 33211222212.

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 21222211233 - 2⁴ = 21222211217 is a prime.

It is a super-3 number, since 3×21222211233³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222211333) 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, 52143 + ... + 212516.

It is an arithmetic number, because the mean of its divisors is an integer number (3537180900).

Almost surely, 2^21222211233 is an apocalyptic number.

It is an amenable number.

21222211233 is a deficient number, since it is larger than the sum of its proper divisors (7075235967).

21222211233 is a wasteful number, since it uses less digits than its factorization.

21222211233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291391.

The product of its digits is 576, while the sum is 21.

Adding to 21222211233 its reverse (33211222212), we get a palindrome (54433433445).

The spelling of 21222211233 in words is "twenty-one billion, two hundred twenty-two million, two hundred eleven thousand, two hundred thirty-three".