1200021103001 has 32 divisors (see below), whose sum is σ = 1392599040000. Its totient is φ = 1012876425792.

The previous prime is 1200021102983. The next prime is 1200021103009. The reversal of 1200021103001 is 1003011200021.

It is not a de Polignac number, because 1200021103001 - 2¹⁰ = 1200021101977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200021103009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74117615 + ... + 74133803.

It is an arithmetic number, because the mean of its divisors is an integer number (43518720000).

Almost surely, 2^{1200021103001} is an apocalyptic number.

It is an amenable number.

1200021103001 is a deficient number, since it is larger than the sum of its proper divisors (192577936999).

1200021103001 is a wasteful number, since it uses less digits than its factorization.

1200021103001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16941.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1200021103001 its reverse (1003011200021), we get a palindrome (2203032303022).

The spelling of 1200021103001 in words is "one trillion, two hundred billion, twenty-one million, one hundred three thousand, one".