220121221003 has 2 divisors, whose sum is σ = 220121221004. Its totient is φ = 220121221002.

The previous prime is 220121220953. The next prime is 220121221039. The reversal of 220121221003 is 300122121022.

It is a happy number.

220121221003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220121221003 - 2⁹ = 220121220491 is a prime.

It is not a weakly prime, because it can be changed into another prime (220121224003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060610501 + 110060610502.

It is an arithmetic number, because the mean of its divisors is an integer number (110060610502).

Almost surely, 2^220121221003 is an apocalyptic number.

220121221003 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121221003 is an equidigital number, since it uses as much as digits as its factorization.

220121221003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220121221003 its reverse (300122121022), we get a palindrome (520243342025).

The spelling of 220121221003 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, three".