320001121123 has 4 divisors (see below), whose sum is σ = 320004819448. Its totient is φ = 319997422800.

The previous prime is 320001121049. The next prime is 320001121147. The reversal of 320001121123 is 321121100023.

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 320001121123 - 2²⁵ = 319967566691 is a prime.

It is a super-2 number, since 2×320001121123² (a number of 24 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 = 320001121097 and 320001121106.

It is not an unprimeable number, because it can be changed into a prime (320001124123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716186 + ... + 1893487.

It is an arithmetic number, because the mean of its divisors is an integer number (80001204862).

Almost surely, 2^320001121123 is an apocalyptic number.

320001121123 is a deficient number, since it is larger than the sum of its proper divisors (3698325).

320001121123 is an equidigital number, since it uses as much as digits as its factorization.

320001121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698324.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 320001121123 its reverse (321121100023), we get a palindrome (641122221146).

The spelling of 320001121123 in words is "three hundred twenty billion, one million, one hundred twenty-one thousand, one hundred twenty-three".