120302440021 has 2 divisors, whose sum is σ = 120302440022. Its totient is φ = 120302440020.

The previous prime is 120302440003. The next prime is 120302440031. The reversal of 120302440021 is 120044203021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103741323921 + 16561116100 = 322089^2 + 128690^2 .

It is a cyclic number.

It is not a de Polignac number, because 120302440021 - 2¹¹ = 120302437973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120302440031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60151220010 + 60151220011.

It is an arithmetic number, because the mean of its divisors is an integer number (60151220011).

Almost surely, 2^120302440021 is an apocalyptic number.

It is an amenable number.

120302440021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120302440021 is an equidigital number, since it uses as much as digits as its factorization.

120302440021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 120302440021 its reverse (120044203021), we get a palindrome (240346643042).

The spelling of 120302440021 in words is "one hundred twenty billion, three hundred two million, four hundred forty thousand, twenty-one".