2100012001 has 8 divisors (see below), whose sum is σ = 2119938984. Its totient is φ = 2080108800.

The previous prime is 2100011999. The next prime is 2100012011. The reversal of 2100012001 is 1002100012.

It can be written as a sum of positive squares in 4 ways, for example, as 352688400 + 1747323601 = 18780^2 + 41801^2 .

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 2100012001 - 2¹ = 2100011999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100012011) 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, 207151 + ... + 217051.

It is an arithmetic number, because the mean of its divisors is an integer number (264992373).

Almost surely, 2^2100012001 is an apocalyptic number.

It is an amenable number.

2100012001 is a deficient number, since it is larger than the sum of its proper divisors (19926983).

2100012001 is a wasteful number, since it uses less digits than its factorization.

2100012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11891.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2100012001 is about 45825.8878910164. The cubic root of 2100012001 is about 1280.5816043845.

Adding to 2100012001 its reverse (1002100012), we get a palindrome (3102112013).

The spelling of 2100012001 in words is "two billion, one hundred million, twelve thousand, one".