1200121112001 has 64 divisors (see below), whose sum is σ = 1861986244608. Its totient is φ = 673392158208.

The previous prime is 1200121111991. The next prime is 1200121112039. The reversal of 1200121112001 is 1002111210021.

It is not a de Polignac number, because 1200121112001 - 2⁷ = 1200121111873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200121111001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1068673626 + ... + 1068674748.

It is an arithmetic number, because the mean of its divisors is an integer number (29093535072).

Almost surely, 2^{1200121112001} is an apocalyptic number.

It is an amenable number.

1200121112001 is a deficient number, since it is larger than the sum of its proper divisors (661865132607).

1200121112001 is a wasteful number, since it uses less digits than its factorization.

1200121112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950.

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

Adding to 1200121112001 its reverse (1002111210021), we get a palindrome (2202232322022).

The spelling of 1200121112001 in words is "one trillion, two hundred billion, one hundred twenty-one million, one hundred twelve thousand, one".