1201011111003 has 16 divisors (see below), whose sum is σ = 1749308541696. Its totient is φ = 726892484640.

The previous prime is 1201011110983. The next prime is 1201011111023. The reversal of 1201011111003 is 3001111101021.

It is an interprime number because it is at equal distance from previous prime (1201011110983) and next prime (1201011111023).

It is not a de Polignac number, because 1201011111003 - 2²⁴ = 1200994333787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201011111003.

It is not an unprimeable number, because it can be changed into a prime (1201011111023) 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, 24801375 + ... + 24849752.

It is an arithmetic number, because the mean of its divisors is an integer number (109331783856).

Almost surely, 2^{1201011111003} is an apocalyptic number.

1201011111003 is a deficient number, since it is larger than the sum of its proper divisors (548297430693).

1201011111003 is a wasteful number, since it uses less digits than its factorization.

1201011111003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49651874.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 1201011111003 its reverse (3001111101021), we get a palindrome (4202122212024).

The spelling of 1201011111003 in words is "one trillion, two hundred one billion, eleven million, one hundred eleven thousand, three".