21161003102033 has 4 divisors (see below), whose sum is σ = 21161620021248. Its totient is φ = 21160386182820.

The previous prime is 21161003101969. The next prime is 21161003102051. The reversal of 21161003102033 is 33020130016112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21161003102033 - 2⁶ = 21161003101969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21161003102233) 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, 308408153 + ... + 308476758.

It is an arithmetic number, because the mean of its divisors is an integer number (5290405005312).

Almost surely, 2^{21161003102033} is an apocalyptic number.

It is an amenable number.

21161003102033 is a deficient number, since it is larger than the sum of its proper divisors (616919215).

21161003102033 is an equidigital number, since it uses as much as digits as its factorization.

21161003102033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616919214.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21161003102033 its reverse (33020130016112), we get a palindrome (54181133118145).

The spelling of 21161003102033 in words is "twenty-one trillion, one hundred sixty-one billion, three million, one hundred two thousand, thirty-three".