21002230300211 has 4 divisors (see below), whose sum is σ = 21026069382024. Its totient is φ = 20978391218400.

The previous prime is 21002230300201. The next prime is 21002230300267. The reversal of 21002230300211 is 11200303220012.

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 21002230300211 - 2³⁴ = 20985050431027 is a prime.

It is a super-3 number, since 3×21002230300211³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21002230300211.

It is not an unprimeable number, because it can be changed into a prime (21002230300201) 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, 11919539585 + ... + 11919541346.

It is an arithmetic number, because the mean of its divisors is an integer number (5256517345506).

Almost surely, 2^{21002230300211} is an apocalyptic number.

21002230300211 is a deficient number, since it is larger than the sum of its proper divisors (23839081813).

21002230300211 is an equidigital number, since it uses as much as digits as its factorization.

21002230300211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23839081812.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21002230300211 its reverse (11200303220012), we get a palindrome (32202533520223).

The spelling of 21002230300211 in words is "twenty-one trillion, two billion, two hundred thirty million, three hundred thousand, two hundred eleven".