21133334211 has 8 divisors (see below), whose sum is σ = 30739395264. Its totient is φ = 12808081320.

The previous prime is 21133334203. The next prime is 21133334249. The reversal of 21133334211 is 11243333112.

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

It is not a de Polignac number, because 21133334211 - 2³ = 21133334203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21133332211) 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, 320202001 + ... + 320202066.

It is an arithmetic number, because the mean of its divisors is an integer number (3842424408).

Almost surely, 2^21133334211 is an apocalyptic number.

21133334211 is a deficient number, since it is larger than the sum of its proper divisors (9606061053).

21133334211 is a wasteful number, since it uses less digits than its factorization.

21133334211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640404081.

The product of its digits is 1296, while the sum is 24.

Adding to 21133334211 its reverse (11243333112), we get a palindrome (32376667323).

The spelling of 21133334211 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirty-four thousand, two hundred eleven".