21021032212211 has 8 divisors (see below), whose sum is σ = 21422274572304. Its totient is φ = 20619960930400.

The previous prime is 21021032212177. The next prime is 21021032212241. The reversal of 21021032212211 is 11221223012012.

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 21021032212211 - 2¹⁰ = 21021032211187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21021032212241) 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, 42521465 + ... + 43012986.

It is an arithmetic number, because the mean of its divisors is an integer number (2677784321538).

Almost surely, 2^{21021032212211} is an apocalyptic number.

21021032212211 is a deficient number, since it is larger than the sum of its proper divisors (401242360093).

21021032212211 is an equidigital number, since it uses as much as digits as its factorization.

21021032212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85539141.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21021032212211 its reverse (11221223012012), we get a palindrome (32242255224223).

The spelling of 21021032212211 in words is "twenty-one trillion, twenty-one billion, thirty-two million, two hundred twelve thousand, two hundred eleven".