1200002012001 has 16 divisors (see below), whose sum is σ = 1914533125120. Its totient is φ = 738462776400.

The previous prime is 1200002011987. The next prime is 1200002012057. The reversal of 1200002012001 is 1002102000021.

It is not a de Polignac number, because 1200002012001 - 2¹⁸ = 1200001749857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1200002052001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1709404225 + ... + 1709404926.

It is an arithmetic number, because the mean of its divisors is an integer number (119658320320).

Almost surely, 2^{1200002012001} is an apocalyptic number.

It is an amenable number.

1200002012001 is a deficient number, since it is larger than the sum of its proper divisors (714531113119).

1200002012001 is a wasteful number, since it uses less digits than its factorization.

1200002012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418809173 (or 3418809167 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1200002012001 its reverse (1002102000021), we get a palindrome (2202104012022).

The spelling of 1200002012001 in words is "one trillion, two hundred billion, two million, twelve thousand, one".