1012200112001 has 8 divisors (see below), whose sum is σ = 1090300719144. Its totient is φ = 934133656320.

The previous prime is 1012200111943. The next prime is 1012200112043. The reversal of 1012200112001 is 1002110022101.

It can be written as a sum of positive squares in 4 ways, for example, as 4906862401 + 1007293249600 = 70049^2 + 1003640^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012200112001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012200112501) 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, 8476286 + ... + 8594871.

It is an arithmetic number, because the mean of its divisors is an integer number (136287589893).

Almost surely, 2^{1012200112001} is an apocalyptic number.

It is an amenable number.

1012200112001 is a deficient number, since it is larger than the sum of its proper divisors (78100607143).

1012200112001 is a wasteful number, since it uses less digits than its factorization.

1012200112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17075731.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1012200112001 its reverse (1002110022101), we get a palindrome (2014310134102).

The spelling of 1012200112001 in words is "one trillion, twelve billion, two hundred million, one hundred twelve thousand, one".