21133322211 has 8 divisors (see below), whose sum is σ = 28187826880. Its totient is φ = 14083849512.

The previous prime is 21133322209. The next prime is 21133322219. The reversal of 21133322211 is 11222333112.

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

It is not a de Polignac number, because 21133322211 - 2¹ = 21133322209 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 1248181 + ... + 1264998.

It is an arithmetic number, because the mean of its divisors is an integer number (3523478360).

Almost surely, 2^21133322211 is an apocalyptic number.

21133322211 is a deficient number, since it is larger than the sum of its proper divisors (7054504669).

21133322211 is a wasteful number, since it uses less digits than its factorization.

21133322211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515985.

The product of its digits is 432, while the sum is 21.

Adding to 21133322211 its reverse (11222333112), we get a palindrome (32355655323).

The spelling of 21133322211 in words is "twenty-one billion, one hundred thirty-three million, three hundred twenty-two thousand, two hundred eleven".