101111001001603 has 4 divisors (see below), whose sum is σ = 101120284916728. Its totient is φ = 101101717086480.

The previous prime is 101111001001601. The next prime is 101111001001639. The reversal of 101111001001603 is 306100100111101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101111001001603 - 2¹ = 101111001001601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101111001001601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4641941226 + ... + 4641963007.

It is an arithmetic number, because the mean of its divisors is an integer number (25280071229182).

Almost surely, 2^{101111001001603} is an apocalyptic number.

101111001001603 is a deficient number, since it is larger than the sum of its proper divisors (9283915125).

101111001001603 is an equidigital number, since it uses as much as digits as its factorization.

101111001001603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9283915124.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 101111001001603 its reverse (306100100111101), we get a palindrome (407211101112704).

The spelling of 101111001001603 in words is "one hundred one trillion, one hundred eleven billion, one million, one thousand, six hundred three".