120012121121 has 4 divisors (see below), whose sum is σ = 120305549700. Its totient is φ = 119718692544.

The previous prime is 120012121093. The next prime is 120012121249. The reversal of 120012121121 is 121121210021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111706350625 + 8305770496 = 334225^2 + 91136^2 .

It is a cyclic number.

It is not a de Polignac number, because 120012121121 - 2⁶ = 120012121057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120012121096 and 120012121105.

It is not an unprimeable number, because it can be changed into a prime (120014121121) 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, 146713676 + ... + 146714493.

It is an arithmetic number, because the mean of its divisors is an integer number (30076387425).

Almost surely, 2^120012121121 is an apocalyptic number.

It is an amenable number.

120012121121 is a deficient number, since it is larger than the sum of its proper divisors (293428579).

120012121121 is an equidigital number, since it uses as much as digits as its factorization.

120012121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293428578.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120012121121 its reverse (121121210021), we get a palindrome (241133331142).

The spelling of 120012121121 in words is "one hundred twenty billion, twelve million, one hundred twenty-one thousand, one hundred twenty-one".