221120222153 has 2 divisors, whose sum is σ = 221120222154. Its totient is φ = 221120222152.

The previous prime is 221120222117. The next prime is 221120222159. The reversal of 221120222153 is 351222021122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162830811529 + 58289410624 = 403523^2 + 241432^2 .

It is a cyclic number.

It is not a de Polignac number, because 221120222153 - 2²² = 221116027849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (221120222159) 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 as a sum of consecutive naturals, namely, 110560111076 + 110560111077.

It is an arithmetic number, because the mean of its divisors is an integer number (110560111077).

Almost surely, 2^221120222153 is an apocalyptic number.

It is an amenable number.

221120222153 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120222153 is an equidigital number, since it uses as much as digits as its factorization.

221120222153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 221120222153 its reverse (351222021122), we get a palindrome (572342243275).

The spelling of 221120222153 in words is "two hundred twenty-one billion, one hundred twenty million, two hundred twenty-two thousand, one hundred fifty-three".