120103043821 has 2 divisors, whose sum is σ = 120103043822. Its totient is φ = 120103043820.

The previous prime is 120103043803. The next prime is 120103043869. The reversal of 120103043821 is 128340301021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103644719721 + 16458324100 = 321939^2 + 128290^2 .

It is a cyclic number.

It is not a de Polignac number, because 120103043821 - 2¹³ = 120103035629 is a prime.

It is a super-2 number, since 2×120103043821² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120103043891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60051521910 + 60051521911.

It is an arithmetic number, because the mean of its divisors is an integer number (60051521911).

Almost surely, 2^120103043821 is an apocalyptic number.

It is an amenable number.

120103043821 is a deficient number, since it is larger than the sum of its proper divisors (1).

120103043821 is an equidigital number, since it uses as much as digits as its factorization.

120103043821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 120103043821 its reverse (128340301021), we get a palindrome (248443344842).

The spelling of 120103043821 in words is "one hundred twenty billion, one hundred three million, forty-three thousand, eight hundred twenty-one".