21045310411 has 16 divisors (see below), whose sum is σ = 22705079040. Its totient is φ = 19461335040.

The previous prime is 21045310399. The next prime is 21045310417. The reversal of 21045310411 is 11401354012.

It is not a de Polignac number, because 21045310411 - 2²⁵ = 21011755979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21045310417) 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, 33466 + ... + 207871.

It is an arithmetic number, because the mean of its divisors is an integer number (1419067440).

Almost surely, 2^21045310411 is an apocalyptic number.

21045310411 is a deficient number, since it is larger than the sum of its proper divisors (1659768629).

21045310411 is a wasteful number, since it uses less digits than its factorization.

21045310411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241494.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21045310411 its reverse (11401354012), we get a palindrome (32446664423).

The spelling of 21045310411 in words is "twenty-one billion, forty-five million, three hundred ten thousand, four hundred eleven".