2101311021203 has 8 divisors (see below), whose sum is σ = 2224931927472. Its totient is φ = 1977691712256.

The previous prime is 2101311021163. The next prime is 2101311021209. The reversal of 2101311021203 is 3021201131012.

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-2101311021203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101311021209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3275276 + ... + 3863942.

It is an arithmetic number, because the mean of its divisors is an integer number (278116490934).

Almost surely, 2^{2101311021203} is an apocalyptic number.

2101311021203 is a deficient number, since it is larger than the sum of its proper divisors (123620906269).

2101311021203 is a wasteful number, since it uses less digits than its factorization.

2101311021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798661.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2101311021203 its reverse (3021201131012), we get a palindrome (5122512152215).

The spelling of 2101311021203 in words is "two trillion, one hundred one billion, three hundred eleven million, twenty-one thousand, two hundred three".