1200513821003 has 8 divisors (see below), whose sum is σ = 1452722607072. Its totient is φ = 968481737856.

The previous prime is 1200513820943. The next prime is 1200513821009. The reversal of 1200513821003 is 3001283150021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200513821003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200513821009) 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, 5044175600 + ... + 5044175837.

It is an arithmetic number, because the mean of its divisors is an integer number (181590325884).

Almost surely, 2^{1200513821003} is an apocalyptic number.

1200513821003 is a deficient number, since it is larger than the sum of its proper divisors (252208786069).

1200513821003 is a wasteful number, since it uses less digits than its factorization.

1200513821003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10088351461.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 1200513821003 its reverse (3001283150021), we get a palindrome (4201796971024).

The spelling of 1200513821003 in words is "one trillion, two hundred billion, five hundred thirteen million, eight hundred twenty-one thousand, three".