21410311133 has 8 divisors (see below), whose sum is σ = 21454217400. Its totient is φ = 21366448128.

The previous prime is 21410311099. The next prime is 21410311187. The reversal of 21410311133 is 33111301412.

It can be written as a sum of positive squares in 4 ways, for example, as 546530884 + 20863780249 = 23378^2 + 144443^2 .

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-21410311133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410310133) 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, 1092263 + ... + 1111691.

It is an arithmetic number, because the mean of its divisors is an integer number (2681777175).

Almost surely, 2^21410311133 is an apocalyptic number.

It is an amenable number.

21410311133 is a deficient number, since it is larger than the sum of its proper divisors (43906267).

21410311133 is a wasteful number, since it uses less digits than its factorization.

21410311133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21631.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21410311133 its reverse (33111301412), we get a palindrome (54521612545).

The spelling of 21410311133 in words is "twenty-one billion, four hundred ten million, three hundred eleven thousand, one hundred thirty-three".