1201111012003 has 16 divisors (see below), whose sum is σ = 1381628473344. Its totient is φ = 1022832439200.

The previous prime is 1201111012001. The next prime is 1201111012051. The reversal of 1201111012003 is 3002101111021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201111012003 - 2¹ = 1201111012001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201111012001) 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, 2017401 + ... + 2544037.

It is an arithmetic number, because the mean of its divisors is an integer number (86351779584).

Almost surely, 2^{1201111012003} is an apocalyptic number.

1201111012003 is a deficient number, since it is larger than the sum of its proper divisors (180517461341).

1201111012003 is a wasteful number, since it uses less digits than its factorization.

1201111012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528762.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1201111012003 its reverse (3002101111021), we get a palindrome (4203212123024).

The spelling of 1201111012003 in words is "one trillion, two hundred one billion, one hundred eleven million, twelve thousand, three".