2001372123512 has 32 divisors (see below), whose sum is σ = 3850432225920. Its totient is φ = 974670620160.

The previous prime is 2001372123481. The next prime is 2001372123547. The reversal of 2001372123512 is 2153212731002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4827053 + ... + 5225244.

It is an arithmetic number, because the mean of its divisors is an integer number (120326007060).

Almost surely, 2^{2001372123512} is an apocalyptic number.

It is an amenable number.

2001372123512 is a deficient number, since it is larger than the sum of its proper divisors (1849060102408).

2001372123512 is a wasteful number, since it uses less digits than its factorization.

2001372123512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10052951 (or 10052947 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 2001372123512 its reverse (2153212731002), we get a palindrome (4154584854514).

The spelling of 2001372123512 in words is "two trillion, one billion, three hundred seventy-two million, one hundred twenty-three thousand, five hundred twelve".