221120222221211 has 2 divisors, whose sum is σ = 221120222221212. Its totient is φ = 221120222221210.

The previous prime is 221120222221183. The next prime is 221120222221231. The reversal of 221120222221211 is 112122222021122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221120222221211 is a prime.

It is not a weakly prime, because it can be changed into another prime (221120222221231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560111110605 + 110560111110606.

It is an arithmetic number, because the mean of its divisors is an integer number (110560111110606).

Almost surely, 2^{221120222221211} is an apocalyptic number.

221120222221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120222221211 is an equidigital number, since it uses as much as digits as its factorization.

221120222221211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221120222221211 its reverse (112122222021122), we get a palindrome (333242444242333).

The spelling of 221120222221211 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".