120101012123 has 4 divisors (see below), whose sum is σ = 127165777560. Its totient is φ = 113036246688.

The previous prime is 120101012113. The next prime is 120101012131. The reversal of 120101012123 is 321210101021.

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

It is a cyclic number.

It is not a de Polignac number, because 120101012123 - 2¹⁰ = 120101011099 is a prime.

It is a super-2 number, since 2×120101012123² (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 = 120101012098 and 120101012107.

It is not an unprimeable number, because it can be changed into a prime (120101012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3532382693 + ... + 3532382726.

It is an arithmetic number, because the mean of its divisors is an integer number (31791444390).

Almost surely, 2^120101012123 is an apocalyptic number.

120101012123 is a deficient number, since it is larger than the sum of its proper divisors (7064765437).

120101012123 is an equidigital number, since it uses as much as digits as its factorization.

120101012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7064765436.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 120101012123 its reverse (321210101021), we get a palindrome (441311113144).

The spelling of 120101012123 in words is "one hundred twenty billion, one hundred one million, twelve thousand, one hundred twenty-three".