2121011331103 has 16 divisors (see below), whose sum is σ = 2529456975360. Its totient is φ = 1738929953376.

The previous prime is 2121011331083. The next prime is 2121011331169. The reversal of 2121011331103 is 3011331101212.

It is not a de Polignac number, because 2121011331103 - 2⁵ = 2121011331071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121011331503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10070488 + ... + 10278946.

It is an arithmetic number, because the mean of its divisors is an integer number (158091060960).

Almost surely, 2^{2121011331103} is an apocalyptic number.

2121011331103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2121011331103 is a deficient number, since it is larger than the sum of its proper divisors (408445644257).

2121011331103 is a wasteful number, since it uses less digits than its factorization.

2121011331103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271686.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2121011331103 its reverse (3011331101212), we get a palindrome (5132342432315).

The spelling of 2121011331103 in words is "two trillion, one hundred twenty-one billion, eleven million, three hundred thirty-one thousand, one hundred three".