2001002112123 has 8 divisors (see below), whose sum is σ = 3049146075648. Its totient is φ = 1143429778344.

The previous prime is 2001002112049. The next prime is 2001002112139. The reversal of 2001002112123 is 3212112001002.

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

It is not a de Polignac number, because 2001002112123 - 2¹⁶ = 2001002046587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001002110123) 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, 47642907411 + ... + 47642907452.

It is an arithmetic number, because the mean of its divisors is an integer number (381143259456).

Almost surely, 2^{2001002112123} is an apocalyptic number.

2001002112123 is a deficient number, since it is larger than the sum of its proper divisors (1048143963525).

2001002112123 is an equidigital number, since it uses as much as digits as its factorization.

2001002112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95285814873.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2001002112123 its reverse (3212112001002), we get a palindrome (5213114113125).

The spelling of 2001002112123 in words is "two trillion, one billion, two million, one hundred twelve thousand, one hundred twenty-three".