1200120103203 has 64 divisors (see below), whose sum is σ = 1860246528000. Its totient is φ = 674101958400.

The previous prime is 1200120103177. The next prime is 1200120103283. The reversal of 1200120103203 is 3023010210021.

It is not a de Polignac number, because 1200120103203 - 2⁹ = 1200120102691 is a prime.

It is a super-2 number, since 2×1200120103203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200120103283) 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, 137956348 + ... + 137965046.

It is an arithmetic number, because the mean of its divisors is an integer number (29066352000).

Almost surely, 2^{1200120103203} is an apocalyptic number.

1200120103203 is a deficient number, since it is larger than the sum of its proper divisors (660126424797).

1200120103203 is a wasteful number, since it uses less digits than its factorization.

1200120103203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1200120103203 its reverse (3023010210021), we get a palindrome (4223130313224).

The spelling of 1200120103203 in words is "one trillion, two hundred billion, one hundred twenty million, one hundred three thousand, two hundred three".