21002300211 has 8 divisors (see below), whose sum is σ = 28081071360. Its totient is φ = 13962531272.

The previous prime is 21002300171. The next prime is 21002300213. The reversal of 21002300211 is 11200320012.

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 21002300211 - 2⁶ = 21002300147 is a prime.

It is a super-2 number, since 2×21002300211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21002300213) 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, 9749295 + ... + 9751448.

It is an arithmetic number, because the mean of its divisors is an integer number (3510133920).

Almost surely, 2^21002300211 is an apocalyptic number.

21002300211 is a deficient number, since it is larger than the sum of its proper divisors (7078771149).

21002300211 is a wasteful number, since it uses less digits than its factorization.

21002300211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19501105.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21002300211 its reverse (11200320012), we get a palindrome (32202620223).

The spelling of 21002300211 in words is "twenty-one billion, two million, three hundred thousand, two hundred eleven".