21223210320211 has 8 divisors (see below), whose sum is σ = 22479651501264. Its totient is φ = 19967659921920.

The previous prime is 21223210320203. The next prime is 21223210320269. The reversal of 21223210320211 is 11202301232212.

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 21223210320211 - 2³ = 21223210320203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223210320311) 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, 222646630 + ... + 222741931.

It is an arithmetic number, because the mean of its divisors is an integer number (2809956437658).

Almost surely, 2^{21223210320211} is an apocalyptic number.

21223210320211 is a deficient number, since it is larger than the sum of its proper divisors (1256441181053).

21223210320211 is a wasteful number, since it uses less digits than its factorization.

21223210320211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445391381.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21223210320211 its reverse (11202301232212), we get a palindrome (32425511552423).

The spelling of 21223210320211 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred ten million, three hundred twenty thousand, two hundred eleven".