21010413211 has 4 divisors (see below), whose sum is σ = 21126493024. Its totient is φ = 20894333400.

The previous prime is 21010413197. The next prime is 21010413253. The reversal of 21010413211 is 11231401012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21010413211 - 2⁹ = 21010412699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010413311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58039635 + ... + 58039996.

It is an arithmetic number, because the mean of its divisors is an integer number (5281623256).

Almost surely, 2^21010413211 is an apocalyptic number.

21010413211 is a deficient number, since it is larger than the sum of its proper divisors (116079813).

21010413211 is a wasteful number, since it uses less digits than its factorization.

21010413211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116079812.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21010413211 its reverse (11231401012), we get a palindrome (32241814223).

The spelling of 21010413211 in words is "twenty-one billion, ten million, four hundred thirteen thousand, two hundred eleven".