21133322212 has 12 divisors (see below), whose sum is σ = 36985223296. Its totient is φ = 10566115560.

The previous prime is 21133322209. The next prime is 21133322219. The reversal of 21133322212 is 21222333112.

It is a super-3 number, since 3×21133322212³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21133322219) 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, 41964 + ... + 209827.

Almost surely, 2^21133322212 is an apocalyptic number.

It is an amenable number.

21133322212 is a deficient number, since it is larger than the sum of its proper divisors (15851901084).

21133322212 is a wasteful number, since it uses less digits than its factorization.

21133322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272778 (or 272776 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 21133322212 its reverse (21222333112), we get a palindrome (42355655324).

The spelling of 21133322212 in words is "twenty-one billion, one hundred thirty-three million, three hundred twenty-two thousand, two hundred twelve".