103204242221 has 2 divisors, whose sum is σ = 103204242222. Its totient is φ = 103204242220.

The previous prime is 103204242187. The next prime is 103204242223. The reversal of 103204242221 is 122242402301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71158230025 + 32046012196 = 266755^2 + 179014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103204242221 is a prime.

It is a super-2 number, since 2×103204242221² (a number of 23 digits) contains 22 as substring.

Together with 103204242223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103204242223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51602121110 + 51602121111.

It is an arithmetic number, because the mean of its divisors is an integer number (51602121111).

Almost surely, 2^103204242221 is an apocalyptic number.

It is an amenable number.

103204242221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103204242221 is an equidigital number, since it uses as much as digits as its factorization.

103204242221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 103204242221 its reverse (122242402301), we get a palindrome (225446644522).

The spelling of 103204242221 in words is "one hundred three billion, two hundred four million, two hundred forty-two thousand, two hundred twenty-one".