21220001133 has 8 divisors (see below), whose sum is σ = 29268967200. Its totient is φ = 13658851248.

The previous prime is 21220001129. The next prime is 21220001141. The reversal of 21220001133 is 33110002212.

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

It is not a de Polignac number, because 21220001133 - 2² = 21220001129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220001633) 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, 121953943 + ... + 121954116.

It is an arithmetic number, because the mean of its divisors is an integer number (3658620900).

Almost surely, 2^21220001133 is an apocalyptic number.

It is an amenable number.

21220001133 is a deficient number, since it is larger than the sum of its proper divisors (8048966067).

21220001133 is a wasteful number, since it uses less digits than its factorization.

21220001133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243908091.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21220001133 its reverse (33110002212), we get a palindrome (54330003345).

The spelling of 21220001133 in words is "twenty-one billion, two hundred twenty million, one thousand, one hundred thirty-three".