1200112121001 has 8 divisors (see below), whose sum is σ = 1605197286144. Its totient is φ = 797550851600.

The previous prime is 1200112120997. The next prime is 1200112121071. The reversal of 1200112121001 is 1001212110021.

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 1200112121001 - 2² = 1200112120997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200112121071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630972825 + ... + 630974726.

It is an arithmetic number, because the mean of its divisors is an integer number (200649660768).

Almost surely, 2^{1200112121001} is an apocalyptic number.

It is an amenable number.

1200112121001 is a deficient number, since it is larger than the sum of its proper divisors (405085165143).

1200112121001 is a wasteful number, since it uses less digits than its factorization.

1200112121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261947871.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1200112121001 its reverse (1001212110021), we get a palindrome (2201324231022).

The spelling of 1200112121001 in words is "one trillion, two hundred billion, one hundred twelve million, one hundred twenty-one thousand, one".