123020132021 has 12 divisors (see below), whose sum is σ = 126494387712. Its totient is φ = 119638913328.

The previous prime is 123020132003. The next prime is 123020132033. The reversal of 123020132021 is 120231020321.

It is not a de Polignac number, because 123020132021 - 2⁶ = 123020131957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020132041) 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 11 ways as a sum of consecutive naturals, for example, 3050636 + ... + 3090698.

It is an arithmetic number, because the mean of its divisors is an integer number (10541198976).

Almost surely, 2^123020132021 is an apocalyptic number.

It is an amenable number.

123020132021 is a deficient number, since it is larger than the sum of its proper divisors (3474255691).

123020132021 is an equidigital number, since it uses as much as digits as its factorization.

123020132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42380 (or 42343 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 123020132021 its reverse (120231020321), we get a palindrome (243251152342).

The spelling of 123020132021 in words is "one hundred twenty-three billion, twenty million, one hundred thirty-two thousand, twenty-one".