1200121201003 has 8 divisors (see below), whose sum is σ = 1266049784720. Its totient is φ = 1134469048320.

The previous prime is 1200121200983. The next prime is 1200121201067. The reversal of 1200121201003 is 3001021210021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200121201003 - 2⁹ = 1200121200491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200121202003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69098838 + ... + 69116203.

It is an arithmetic number, because the mean of its divisors is an integer number (158256223090).

Almost surely, 2^{1200121201003} is an apocalyptic number.

1200121201003 is a deficient number, since it is larger than the sum of its proper divisors (65928583717).

1200121201003 is a wasteful number, since it uses less digits than its factorization.

1200121201003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138215517.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1200121201003 its reverse (3001021210021), we get a palindrome (4201142411024).

The spelling of 1200121201003 in words is "one trillion, two hundred billion, one hundred twenty-one million, two hundred one thousand, three".