21010100020211 has 8 divisors (see below), whose sum is σ = 22246301942640. Its totient is φ = 19773932951808.

The previous prime is 21010100020201. The next prime is 21010100020213. The reversal of 21010100020211 is 11202000101012.

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 21010100020211 - 2²⁶ = 21010032911347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010100020192 and 21010100020201.

It is not an unprimeable number, because it can be changed into a prime (21010100020213) 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, 7467341 + ... + 9888446.

It is an arithmetic number, because the mean of its divisors is an integer number (2780787742830).

Almost surely, 2^{21010100020211} is an apocalyptic number.

21010100020211 is a deficient number, since it is larger than the sum of its proper divisors (1236201922429).

21010100020211 is a wasteful number, since it uses less digits than its factorization.

21010100020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17427013.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21010100020211 its reverse (11202000101012), we get a palindrome (32212100121223).

The spelling of 21010100020211 in words is "twenty-one trillion, ten billion, one hundred million, twenty thousand, two hundred eleven".