20100221003 has 2 divisors, whose sum is σ = 20100221004. Its totient is φ = 20100221002.

The previous prime is 20100220979. The next prime is 20100221027. The reversal of 20100221003 is 30012200102.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20100220979) and next prime (20100221027).

It is a cyclic number.

It is not a de Polignac number, because 20100221003 - 2²⁰ = 20099172427 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100221503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050110501 + 10050110502.

It is an arithmetic number, because the mean of its divisors is an integer number (10050110502).

Almost surely, 2^20100221003 is an apocalyptic number.

20100221003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100221003 is an equidigital number, since it uses as much as digits as its factorization.

20100221003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20100221003 its reverse (30012200102), we get a palindrome (50112421105).

The spelling of 20100221003 in words is "twenty billion, one hundred million, two hundred twenty-one thousand, three".