120112210012021 has 4 divisors (see below), whose sum is σ = 120113317952044. Its totient is φ = 120111102072000.

The previous prime is 120112210012013. The next prime is 120112210012049. The reversal of 120112210012021 is 120210012211021.

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 70814412916900 + 49297797095121 = 8415130^2 + 7021239^2 .

It is a cyclic number.

It is not a de Polignac number, because 120112210012021 - 2³ = 120112210012013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120112210011986 and 120112210012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120112213012021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553807380 + ... + 554024221.

It is an arithmetic number, because the mean of its divisors is an integer number (30028329488011).

Almost surely, 2^{120112210012021} is an apocalyptic number.

It is an amenable number.

120112210012021 is a deficient number, since it is larger than the sum of its proper divisors (1107940023).

120112210012021 is a wasteful number, since it uses less digits than its factorization.

120112210012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107940022.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120112210012021 its reverse (120210012211021), we get a palindrome (240322222223042).

The spelling of 120112210012021 in words is "one hundred twenty trillion, one hundred twelve billion, two hundred ten million, twelve thousand, twenty-one".