2100120012001 has 8 divisors (see below), whose sum is σ = 2318642905824. Its totient is φ = 1886197600320.

The previous prime is 2100120011993. The next prime is 2100120012007. The reversal of 2100120012001 is 1002100210012.

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

It is not a de Polignac number, because 2100120012001 - 2³ = 2100120011993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100120012007) 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, 1150119576 + ... + 1150121401.

It is an arithmetic number, because the mean of its divisors is an integer number (289830363228).

Almost surely, 2^{2100120012001} is an apocalyptic number.

It is an amenable number.

2100120012001 is a deficient number, since it is larger than the sum of its proper divisors (218522893823).

2100120012001 is a wasteful number, since it uses less digits than its factorization.

2100120012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300241071.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2100120012001 its reverse (1002100210012), we get a palindrome (3102220222013).

It can be divided in two parts, 21001 and 20012001, that added together give a palindrome (20033002).

The spelling of 2100120012001 in words is "two trillion, one hundred billion, one hundred twenty million, twelve thousand, one".