21133221219 has 96 divisors (see below), whose sum is σ = 36736934400. Its totient is φ = 11901764160.

The previous prime is 21133221211. The next prime is 21133221229. The reversal of 21133221219 is 91212233112.

21133221219 is a `hidden beast` number, since 211 + 3 + 322 + 121 + 9 = 666.

It is not a de Polignac number, because 21133221219 - 2³ = 21133221211 is a prime.

It is a super-2 number, since 2×21133221219² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21133221192 and 21133221201.

It is not an unprimeable number, because it can be changed into a prime (21133221211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5680642 + ... + 5684360.

It is an arithmetic number, because the mean of its divisors is an integer number (382676400).

Almost surely, 2^21133221219 is an apocalyptic number.

21133221219 is a deficient number, since it is larger than the sum of its proper divisors (15603713181).

21133221219 is a wasteful number, since it uses less digits than its factorization.

21133221219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830 (or 3805 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The spelling of 21133221219 in words is "twenty-one billion, one hundred thirty-three million, two hundred twenty-one thousand, two hundred nineteen".