21033110211131 has 8 divisors (see below), whose sum is σ = 21389823187200. Its totient is φ = 20676404554600.

The previous prime is 21033110211109. The next prime is 21033110211133. The reversal of 21033110211131 is 13111201133012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21033110211131 is a prime.

It is a super-2 number, since 2×21033110211131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21033110211133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129130 + ... + 7688688.

It is an arithmetic number, because the mean of its divisors is an integer number (2673727898400).

Almost surely, 2^{21033110211131} is an apocalyptic number.

21033110211131 is a deficient number, since it is larger than the sum of its proper divisors (356712976069).

21033110211131 is a wasteful number, since it uses less digits than its factorization.

21033110211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659769.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 21033110211131 its reverse (13111201133012), we get a palindrome (34144311344143).

The spelling of 21033110211131 in words is "twenty-one trillion, thirty-three billion, one hundred ten million, two hundred eleven thousand, one hundred thirty-one".