21011022102211 has 8 divisors (see below), whose sum is σ = 21456896358240. Its totient is φ = 20566978952832.

The previous prime is 21011022102209. The next prime is 21011022102271. The reversal of 21011022102211 is 11220122011012.

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 21011022102211 - 2¹ = 21011022102209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21011022102271) 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, 457753471 + ... + 457799368.

It is an arithmetic number, because the mean of its divisors is an integer number (2682112044780).

Almost surely, 2^{21011022102211} is an apocalyptic number.

21011022102211 is a deficient number, since it is larger than the sum of its proper divisors (445874256029).

21011022102211 is an equidigital number, since it uses as much as digits as its factorization.

21011022102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915553325.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21011022102211 its reverse (11220122011012), we get a palindrome (32231144113223).

The spelling of 21011022102211 in words is "twenty-one trillion, eleven billion, twenty-two million, one hundred two thousand, two hundred eleven".