20211222220211 has 8 divisors (see below), whose sum is σ = 22050611885424. Its totient is φ = 18372166859520.

The previous prime is 20211222220201. The next prime is 20211222220219. The reversal of 20211222220211 is 11202222211202.

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 20211222220211 - 2¹⁰ = 20211222219187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211222220219) 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, 83449706 + ... + 83691551.

It is an arithmetic number, because the mean of its divisors is an integer number (2756326485678).

Almost surely, 2^{20211222220211} is an apocalyptic number.

20211222220211 is a deficient number, since it is larger than the sum of its proper divisors (1839389665213).

20211222220211 is a wasteful number, since it uses less digits than its factorization.

20211222220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167152261.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20211222220211 its reverse (11202222211202), we get a palindrome (31413444431413).

Subtracting from 20211222220211 its reverse (11202222211202), we obtain a palindrome (9009000009009).

The spelling of 20211222220211 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred eleven".