120303821 has 4 divisors (see below), whose sum is σ = 131240544. Its totient is φ = 109367100.

The previous prime is 120303811. The next prime is 120303847. The reversal of 120303821 is 128303021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120303821 - 2¹⁴ = 120287437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120303793 and 120303802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120303811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5468345 + ... + 5468366.

It is an arithmetic number, because the mean of its divisors is an integer number (32810136).

Almost surely, 2^120303821 is an apocalyptic number.

120303821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120303821 is a deficient number, since it is larger than the sum of its proper divisors (10936723).

120303821 is a wasteful number, since it uses less digits than its factorization.

120303821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936722.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 120303821 is about 10968.3098515678. The cubic root of 120303821 is about 493.6583346149.

Adding to 120303821 its reverse (128303021), we get a palindrome (248606842).

It can be divided in two parts, 12030 and 3821, that added together give a palindrome (15851).

The spelling of 120303821 in words is "one hundred twenty million, three hundred three thousand, eight hundred twenty-one".