120354402821 has 16 divisors (see below), whose sum is σ = 126197153280. Its totient is φ = 114648056640.

The previous prime is 120354402793. The next prime is 120354402827. The reversal of 120354402821 is 128204453021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120354402821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120354402827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405215 + ... + 636323.

It is an arithmetic number, because the mean of its divisors is an integer number (7887322080).

Almost surely, 2^120354402821 is an apocalyptic number.

It is an amenable number.

120354402821 is a deficient number, since it is larger than the sum of its proper divisors (5842750459).

120354402821 is a wasteful number, since it uses less digits than its factorization.

120354402821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231404.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 120354402821 its reverse (128204453021), we get a palindrome (248558855842).

The spelling of 120354402821 in words is "one hundred twenty billion, three hundred fifty-four million, four hundred two thousand, eight hundred twenty-one".