1103329631021 has 4 divisors (see below), whose sum is σ = 1105190221212. Its totient is φ = 1101469040832.

The previous prime is 1103329631003. The next prime is 1103329631093. The reversal of 1103329631021 is 1201369233011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 366503106025 + 736826524996 = 605395^2 + 858386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103329631021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103325631021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930294206 + ... + 930295391.

It is an arithmetic number, because the mean of its divisors is an integer number (276297555303).

Almost surely, 2^{1103329631021} is an apocalyptic number.

It is an amenable number.

1103329631021 is a deficient number, since it is larger than the sum of its proper divisors (1860590191).

1103329631021 is an equidigital number, since it uses as much as digits as its factorization.

1103329631021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860590190.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 1103329631021 in words is "one trillion, one hundred three billion, three hundred twenty-nine million, six hundred thirty-one thousand, twenty-one".