1200120122001 has 16 divisors (see below), whose sum is σ = 1643439412800. Its totient is φ = 778441290048.

The previous prime is 1200120121999. The next prime is 1200120122053. The reversal of 1200120122001 is 1002210210021.

It is not a de Polignac number, because 1200120122001 - 2¹ = 1200120121999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200120122401) 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, 10753555 + ... + 10864583.

It is an arithmetic number, because the mean of its divisors is an integer number (102714963300).

Almost surely, 2^{1200120122001} is an apocalyptic number.

It is an amenable number.

1200120122001 is a deficient number, since it is larger than the sum of its proper divisors (443319290799).

1200120122001 is a wasteful number, since it uses less digits than its factorization.

1200120122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208448.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200120122001 its reverse (1002210210021), we get a palindrome (2202330332022).

The spelling of 1200120122001 in words is "one trillion, two hundred billion, one hundred twenty million, one hundred twenty-two thousand, one".