21002201020211 has 8 divisors (see below), whose sum is σ = 21623660239104. Its totient is φ = 20385942297280.

The previous prime is 21002201020189. The next prime is 21002201020217. The reversal of 21002201020211 is 11202010220012.

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-21002201020211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002201020217) 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, 1300115795 + ... + 1300131948.

It is an arithmetic number, because the mean of its divisors is an integer number (2702957529888).

Almost surely, 2^{21002201020211} is an apocalyptic number.

21002201020211 is a deficient number, since it is larger than the sum of its proper divisors (621459218893).

21002201020211 is a wasteful number, since it uses less digits than its factorization.

21002201020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600247981.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21002201020211 its reverse (11202010220012), we get a palindrome (32204211240223).

The spelling of 21002201020211 in words is "twenty-one trillion, two billion, two hundred one million, twenty thousand, two hundred eleven".