120021121355013 has 96 divisors (see below), whose sum is σ = 187628911142400. Its totient is φ = 73740373217280.

The previous prime is 120021121355011. The next prime is 120021121355041. The reversal of 120021121355013 is 310553121120021.

120021121355013 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 2 + 1 + 121 + 35 + 501 + 3 = 666.

It is not a de Polignac number, because 120021121355013 - 2¹ = 120021121355011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021121355011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 265425688 + ... + 265877486.

It is an arithmetic number, because the mean of its divisors is an integer number (1954467824400).

Almost surely, 2^{120021121355013} is an apocalyptic number.

It is an amenable number.

120021121355013 is a deficient number, since it is larger than the sum of its proper divisors (67607789787387).

120021121355013 is a wasteful number, since it uses less digits than its factorization.

120021121355013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452259 (or 452256 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 120021121355013 its reverse (310553121120021), we get a palindrome (430574242475034).

The spelling of 120021121355013 in words is "one hundred twenty trillion, twenty-one billion, one hundred twenty-one million, three hundred fifty-five thousand, thirteen".