21220122102211 has 8 divisors (see below), whose sum is σ = 21266729254080. Its totient is φ = 21173518293312.

The previous prime is 21220122102173. The next prime is 21220122102227. The reversal of 21220122102211 is 11220122102212.

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 21220122102211 - 2³⁷ = 21082683148739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220122102241) 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, 12092895 + ... + 13736023.

It is an arithmetic number, because the mean of its divisors is an integer number (2658341156760).

Almost surely, 2^{21220122102211} is an apocalyptic number.

21220122102211 is a deficient number, since it is larger than the sum of its proper divisors (46607151869).

21220122102211 is a wasteful number, since it uses less digits than its factorization.

21220122102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671485.

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

Adding to 21220122102211 its reverse (11220122102212), we get a palindrome (32440244204423).

Subtracting from 21220122102211 its reverse (11220122102212), we obtain a palindrome (9999999999999).

The spelling of 21220122102211 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred two thousand, two hundred eleven".