103221320437 has 2 divisors, whose sum is σ = 103221320438. Its totient is φ = 103221320436.

The previous prime is 103221320407. The next prime is 103221320453. The reversal of 103221320437 is 734023122301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83529092196 + 19692228241 = 289014^2 + 140329^2 .

It is a cyclic number.

It is not a de Polignac number, because 103221320437 - 2⁷ = 103221320309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103221320407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51610660218 + 51610660219.

It is an arithmetic number, because the mean of its divisors is an integer number (51610660219).

Almost surely, 2^103221320437 is an apocalyptic number.

It is an amenable number.

103221320437 is a deficient number, since it is larger than the sum of its proper divisors (1).

103221320437 is an equidigital number, since it uses as much as digits as its factorization.

103221320437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 103221320437 its reverse (734023122301), we get a palindrome (837244442738).

The spelling of 103221320437 in words is "one hundred three billion, two hundred twenty-one million, three hundred twenty thousand, four hundred thirty-seven".