220121303 has 2 divisors, whose sum is σ = 220121304. Its totient is φ = 220121302.

The previous prime is 220121273. The next prime is 220121309. The reversal of 220121303 is 303121022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220121303 - 2⁸ = 220121047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220121309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060651 + 110060652.

It is an arithmetic number, because the mean of its divisors is an integer number (110060652).

Almost surely, 2^220121303 is an apocalyptic number.

220121303 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121303 is an equidigital number, since it uses as much as digits as its factorization.

220121303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 220121303 is about 14836.4855339801. The cubic root of 220121303 is about 603.7920053019.

Adding to 220121303 its reverse (303121022), we get a palindrome (523242325).

The spelling of 220121303 in words is "two hundred twenty million, one hundred twenty-one thousand, three hundred three".