12010120010001 has 24 divisors (see below), whose sum is σ = 17583345786240. Its totient is φ = 7898729175456.

The previous prime is 12010120009997. The next prime is 12010120010003. The reversal of 12010120010001 is 10001002101021.

It is a happy number.

It is not a de Polignac number, because 12010120010001 - 2² = 12010120009997 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12010120010003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25860990 + ... + 26321303.

It is an arithmetic number, because the mean of its divisors is an integer number (732639407760).

Almost surely, 2^{12010120010001} is an apocalyptic number.

It is an amenable number.

12010120010001 is a deficient number, since it is larger than the sum of its proper divisors (5573225776239).

12010120010001 is a wasteful number, since it uses less digits than its factorization.

12010120010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52182645 (or 52182642 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12010120010001 its reverse (10001002101021), we get a palindrome (22011122111022).

The spelling of 12010120010001 in words is "twelve trillion, ten billion, one hundred twenty million, ten thousand, one".