21220232022211 has 16 divisors (see below), whose sum is σ = 22849716163680. Its totient is φ = 19633119600640.

The previous prime is 21220232022181. The next prime is 21220232022281. The reversal of 21220232022211 is 11222023202212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21220232022211 - 2⁷ = 21220232022083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220232022281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67019991 + ... + 67335871.

It is an arithmetic number, because the mean of its divisors is an integer number (1428107260230).

Almost surely, 2^{21220232022211} is an apocalyptic number.

21220232022211 is a deficient number, since it is larger than the sum of its proper divisors (1629484141469).

21220232022211 is a wasteful number, since it uses less digits than its factorization.

21220232022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382934.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21220232022211 its reverse (11222023202212), we get a palindrome (32442255224423).

The spelling of 21220232022211 in words is "twenty-one trillion, two hundred twenty billion, two hundred thirty-two million, twenty-two thousand, two hundred eleven".