10103243221 has 2 divisors, whose sum is σ = 10103243222. Its totient is φ = 10103243220.

The previous prime is 10103243177. The next prime is 10103243251. The reversal of 10103243221 is 12234230101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9897464196 + 205779025 = 99486^2 + 14345^2 .

It is an emirp because it is prime and its reverse (12234230101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10103243221 - 2¹¹ = 10103241173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10103243251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051621610 + 5051621611.

It is an arithmetic number, because the mean of its divisors is an integer number (5051621611).

Almost surely, 2^10103243221 is an apocalyptic number.

It is an amenable number.

10103243221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10103243221 is an equidigital number, since it uses as much as digits as its factorization.

10103243221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 10103243221 its reverse (12234230101), we get a palindrome (22337473322).

The spelling of 10103243221 in words is "ten billion, one hundred three million, two hundred forty-three thousand, two hundred twenty-one".