21003234333211 has 8 divisors (see below), whose sum is σ = 22618905861104. Its totient is φ = 19387568250720.

The previous prime is 21003234333187. The next prime is 21003234333247. The reversal of 21003234333211 is 11233343230012.

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

It is a cyclic number.

It is not a de Polignac number, because 21003234333211 - 2³³ = 20994644398619 is a prime.

It is a super-2 number, since 2×21003234333211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21003234333211.

It is not an unprimeable number, because it can be changed into a prime (21003234333811) 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, 10435996 + ... + 12284806.

It is an arithmetic number, because the mean of its divisors is an integer number (2827363232638).

Almost surely, 2^{21003234333211} is an apocalyptic number.

21003234333211 is a deficient number, since it is larger than the sum of its proper divisors (1615671527893).

21003234333211 is a wasteful number, since it uses less digits than its factorization.

21003234333211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722701.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21003234333211 its reverse (11233343230012), we get a palindrome (32236577563223).

The spelling of 21003234333211 in words is "twenty-one trillion, three billion, two hundred thirty-four million, three hundred thirty-three thousand, two hundred eleven".