21220102212211 has 8 divisors (see below), whose sum is σ = 24251599147104. Its totient is φ = 18188618717760.

The previous prime is 21220102212191. The next prime is 21220102212233. The reversal of 21220102212211 is 11221220102212.

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 21220102212211 - 2²⁷ = 21219967994483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220102212241) 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, 287001 + ... + 6520933.

It is an arithmetic number, because the mean of its divisors is an integer number (3031449893388).

Almost surely, 2^{21220102212211} is an apocalyptic number.

21220102212211 is a deficient number, since it is larger than the sum of its proper divisors (3031496934893).

21220102212211 is an equidigital number, since it uses as much as digits as its factorization.

21220102212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720221.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21220102212211 its reverse (11221220102212), we get a palindrome (32441322314423).

The spelling of 21220102212211 in words is "twenty-one trillion, two hundred twenty billion, one hundred two million, two hundred twelve thousand, two hundred eleven".