1200002112101 has 16 divisors (see below), whose sum is σ = 1304409025920. Its totient is φ = 1097327424960.

The previous prime is 1200002112073. The next prime is 1200002112139. The reversal of 1200002112101 is 1012112000021.

It is a de Polignac number, because none of the positive numbers 2^k-1200002112101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200002112301) 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, 7806656 + ... + 7958886.

It is an arithmetic number, because the mean of its divisors is an integer number (81525564120).

Almost surely, 2^{1200002112101} is an apocalyptic number.

It is an amenable number.

1200002112101 is a deficient number, since it is larger than the sum of its proper divisors (104406913819).

1200002112101 is a wasteful number, since it uses less digits than its factorization.

1200002112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157916.

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

Adding to 1200002112101 its reverse (1012112000021), we get a palindrome (2212114112122).

The spelling of 1200002112101 in words is "one trillion, two hundred billion, two million, one hundred twelve thousand, one hundred one".