120312302121 has 12 divisors (see below), whose sum is σ = 189583021680. Its totient is φ = 72916546680.

The previous prime is 120312302119. The next prime is 120312302137. The reversal of 120312302121 is 121203213021.

It is not a de Polignac number, because 120312302121 - 2¹ = 120312302119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120312302094 and 120312302103.

It is not an unprimeable number, because it can be changed into a prime (120312302171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607637791 + ... + 607637988.

It is an arithmetic number, because the mean of its divisors is an integer number (15798585140).

Almost surely, 2^120312302121 is an apocalyptic number.

120312302121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120312302121 is a deficient number, since it is larger than the sum of its proper divisors (69270719559).

120312302121 is a wasteful number, since it uses less digits than its factorization.

120312302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215275796 (or 1215275793 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 120312302121 its reverse (121203213021), we get a palindrome (241515515142).

The spelling of 120312302121 in words is "one hundred twenty billion, three hundred twelve million, three hundred two thousand, one hundred twenty-one".