120312210121 has 8 divisors (see below), whose sum is σ = 120680821800. Its totient is φ = 119944151040.

The previous prime is 120312210097. The next prime is 120312210133. The reversal of 120312210121 is 121012213021.

It can be written as a sum of positive squares in 4 ways, for example, as 4719690000 + 115592520121 = 68700^2 + 339989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120312210121 - 2¹³ = 120312201929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120312210095 and 120312210104.

It is not an unprimeable number, because it can be changed into a prime (120312210521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300081 + ... + 575041.

It is an arithmetic number, because the mean of its divisors is an integer number (15085102725).

Almost surely, 2^120312210121 is an apocalyptic number.

It is an amenable number.

120312210121 is a deficient number, since it is larger than the sum of its proper divisors (368611679).

120312210121 is an equidigital number, since it uses as much as digits as its factorization.

120312210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276299.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 120312210121 its reverse (121012213021), we get a palindrome (241324423142).

The spelling of 120312210121 in words is "one hundred twenty billion, three hundred twelve million, two hundred ten thousand, one hundred twenty-one".