220421153 has 2 divisors, whose sum is σ = 220421154. Its totient is φ = 220421152.

The previous prime is 220421111. The next prime is 220421161. The reversal of 220421153 is 351124022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166074769 + 54346384 = 12887^2 + 7372^2 .

It is a cyclic number.

It is not a de Polignac number, because 220421153 - 2⁸ = 220420897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220421183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110210576 + 110210577.

It is an arithmetic number, because the mean of its divisors is an integer number (110210577).

Almost surely, 2^220421153 is an apocalyptic number.

It is an amenable number.

220421153 is a deficient number, since it is larger than the sum of its proper divisors (1).

220421153 is an equidigital number, since it uses as much as digits as its factorization.

220421153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 220421153 is about 14846.5872509476. The cubic root of 220421153 is about 604.0660434267.

Adding to 220421153 its reverse (351124022), we get a palindrome (571545175).

The spelling of 220421153 in words is "two hundred twenty million, four hundred twenty-one thousand, one hundred fifty-three".