1002002012123 has 8 divisors (see below), whose sum is σ = 1145469313248. Its totient is φ = 858615750144.

The previous prime is 1002002012071. The next prime is 1002002012149. The reversal of 1002002012123 is 3212102002001.

It is a happy number.

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 1002002012123 - 2¹² = 1002002008027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002002012098 and 1002002012107.

It is not an unprimeable number, because it can be changed into a prime (1002002018123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20233286 + ... + 20282747.

It is an arithmetic number, because the mean of its divisors is an integer number (143183664156).

Almost surely, 2^{1002002012123} is an apocalyptic number.

1002002012123 is a deficient number, since it is larger than the sum of its proper divisors (143467301125).

1002002012123 is an equidigital number, since it uses as much as digits as its factorization.

1002002012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40519573.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1002002012123 its reverse (3212102002001), we get a palindrome (4214104014124).

The spelling of 1002002012123 in words is "one trillion, two billion, two million, twelve thousand, one hundred twenty-three".