123021130121 has 8 divisors (see below), whose sum is σ = 125227267200. Its totient is φ = 120833301600.

The previous prime is 123021130087. The next prime is 123021130123. The reversal of 123021130121 is 121031120321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123021130121 - 2²⁶ = 122954021257 is a prime.

It is a super-3 number, since 3×123021130121³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123021130121.

It is not an unprimeable number, because it can be changed into a prime (123021130123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4563581 + ... + 4590458.

It is an arithmetic number, because the mean of its divisors is an integer number (15653408400).

Almost surely, 2^123021130121 is an apocalyptic number.

It is an amenable number.

123021130121 is a deficient number, since it is larger than the sum of its proper divisors (2206137079).

123021130121 is an equidigital number, since it uses as much as digits as its factorization.

123021130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9154279.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123021130121 its reverse (121031120321), we get a palindrome (244052250442).

The spelling of 123021130121 in words is "one hundred twenty-three billion, twenty-one million, one hundred thirty thousand, one hundred twenty-one".