120112123021 has 4 divisors (see below), whose sum is σ = 131031406944. Its totient is φ = 109192839100.

The previous prime is 120112122989. The next prime is 120112123093. The reversal of 120112123021 is 120321211021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120112123021 - 2⁵ = 120112122989 is a prime.

It is a super-2 number, since 2×120112123021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120112122986 and 120112123004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120112123721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5459641945 + ... + 5459641966.

It is an arithmetic number, because the mean of its divisors is an integer number (32757851736).

Almost surely, 2^120112123021 is an apocalyptic number.

120112123021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120112123021 is a deficient number, since it is larger than the sum of its proper divisors (10919283923).

120112123021 is a wasteful number, since it uses less digits than its factorization.

120112123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10919283922.

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

Adding to 120112123021 its reverse (120321211021), we get a palindrome (240433334042).

The spelling of 120112123021 in words is "one hundred twenty billion, one hundred twelve million, one hundred twenty-three thousand, twenty-one".