21122022220211 has 8 divisors (see below), whose sum is σ = 23042242556784. Its totient is φ = 19201807966720.

The previous prime is 21122022220181. The next prime is 21122022220237. The reversal of 21122022220211 is 11202222022112.

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 21122022220211 - 2¹⁸ = 21122021958067 is a prime.

It is a super-3 number, since 3×21122022220211³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (21122022220291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8762915 + ... + 10910211.

It is an arithmetic number, because the mean of its divisors is an integer number (2880280319598).

Almost surely, 2^{21122022220211} is an apocalyptic number.

21122022220211 is a deficient number, since it is larger than the sum of its proper divisors (1920220336573).

21122022220211 is a wasteful number, since it uses less digits than its factorization.

21122022220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041541.

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

Adding to 21122022220211 its reverse (11202222022112), we get a palindrome (32324244242323).

The spelling of 21122022220211 in words is "twenty-one trillion, one hundred twenty-two billion, twenty-two million, two hundred twenty thousand, two hundred eleven".