7921303121123 has 32 divisors (see below), whose sum is σ = 9672038400000. Its totient is φ = 6340907784960.

The previous prime is 7921303121093. The next prime is 7921303121183. The reversal of 7921303121123 is 3211213031297.

It is not a de Polignac number, because 7921303121123 - 2⁶ = 7921303121059 is a prime.

It is a super-2 number, since 2×7921303121123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7921303121183) 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 31 ways as a sum of consecutive naturals, for example, 12264863 + ... + 12894551.

It is an arithmetic number, because the mean of its divisors is an integer number (302251200000).

Almost surely, 2^{7921303121123} is an apocalyptic number.

7921303121123 is a deficient number, since it is larger than the sum of its proper divisors (1750735278877).

7921303121123 is a wasteful number, since it uses less digits than its factorization.

7921303121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631755.

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 7921303121123 in words is "seven trillion, nine hundred twenty-one billion, three hundred three million, one hundred twenty-one thousand, one hundred twenty-three".