120103440021 has 12 divisors (see below), whose sum is σ = 173544019948. Its totient is φ = 80040680064.

The previous prime is 120103440007. The next prime is 120103440073. The reversal of 120103440021 is 120044301021.

120103440021 is a `hidden beast` number, since 1 + 201 + 0 + 3 + 440 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 66311915121 + 53791524900 = 257511^2 + 231930^2 .

It is not a de Polignac number, because 120103440021 - 2⁶ = 120103439957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120103439976 and 120103440003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120103442021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2329750 + ... + 2380743.

Almost surely, 2^120103440021 is an apocalyptic number.

It is an amenable number.

120103440021 is a deficient number, since it is larger than the sum of its proper divisors (53440579927).

120103440021 is a wasteful number, since it uses less digits than its factorization.

120103440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713332 (or 4713329 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 120103440021 its reverse (120044301021), we get a palindrome (240147741042).

The spelling of 120103440021 in words is "one hundred twenty billion, one hundred three million, four hundred forty thousand, twenty-one".