21221333319 has 8 divisors (see below), whose sum is σ = 28309064560. Its totient is φ = 14140578816.

The previous prime is 21221333317. The next prime is 21221333333. The reversal of 21221333319 is 91333312212.

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

It is not a de Polignac number, because 21221333319 - 2¹ = 21221333317 is a prime.

It is a super-2 number, since 2×21221333319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221333317) 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 7 ways as a sum of consecutive naturals, for example, 1737082 + ... + 1749255.

It is an arithmetic number, because the mean of its divisors is an integer number (3538633070).

Almost surely, 2^21221333319 is an apocalyptic number.

21221333319 is a deficient number, since it is larger than the sum of its proper divisors (7087731241).

21221333319 is a wasteful number, since it uses less digits than its factorization.

21221333319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488369.

The product of its digits is 5832, while the sum is 30.

The spelling of 21221333319 in words is "twenty-one billion, two hundred twenty-one million, three hundred thirty-three thousand, three hundred nineteen".