21333100011 has 16 divisors (see below), whose sum is σ = 29070201888. Its totient is φ = 13911609600.

The previous prime is 21333099971. The next prime is 21333100037. The reversal of 21333100011 is 11000133312.

It is not a de Polignac number, because 21333100011 - 2¹⁴ = 21333083627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21333100091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288906 + ... + 355151.

It is an arithmetic number, because the mean of its divisors is an integer number (1816887618).

Almost surely, 2^21333100011 is an apocalyptic number.

21333100011 is a deficient number, since it is larger than the sum of its proper divisors (7737101877).

21333100011 is a wasteful number, since it uses less digits than its factorization.

21333100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644302.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21333100011 its reverse (11000133312), we get a palindrome (32333233323).

The spelling of 21333100011 in words is "twenty-one billion, three hundred thirty-three million, one hundred thousand, eleven".