22221221201211 has 8 divisors (see below), whose sum is σ = 29659581417024. Its totient is φ = 14798504226440.

The previous prime is 22221221201161. The next prime is 22221221201251. The reversal of 22221221201211 is 11210212212222.

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 22221221201211 - 2¹⁹ = 22221220676923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22221221201251) 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, 3910806945 + ... + 3910812626.

It is an arithmetic number, because the mean of its divisors is an integer number (3707447677128).

Almost surely, 2^{22221221201211} is an apocalyptic number.

22221221201211 is a deficient number, since it is larger than the sum of its proper divisors (7438360215813).

22221221201211 is an equidigital number, since it uses as much as digits as its factorization.

22221221201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821620521.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22221221201211 its reverse (11210212212222), we get a palindrome (33431433413433).

The spelling of 22221221201211 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, two hundred eleven".