21220201010303 has 2 divisors, whose sum is σ = 21220201010304. Its totient is φ = 21220201010302.

The previous prime is 21220201010227. The next prime is 21220201010339. The reversal of 21220201010303 is 30301010202212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220201010303 - 2²² = 21220196815999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21220801010303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610100505151 + 10610100505152.

It is an arithmetic number, because the mean of its divisors is an integer number (10610100505152).

Almost surely, 2^{21220201010303} is an apocalyptic number.

21220201010303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220201010303 is an equidigital number, since it uses as much as digits as its factorization.

21220201010303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21220201010303 its reverse (30301010202212), we get a palindrome (51521211212515).

The spelling of 21220201010303 in words is "twenty-one trillion, two hundred twenty billion, two hundred one million, ten thousand, three hundred three".