21103033201 has 4 divisors (see below), whose sum is σ = 21104797552. Its totient is φ = 21101268852.

The previous prime is 21103033169. The next prime is 21103033219. The reversal of 21103033201 is 10233030112.

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 21103033201 - 2⁵ = 21103033169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103033241) 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, 864111 + ... + 888196.

It is an arithmetic number, because the mean of its divisors is an integer number (5276199388).

Almost surely, 2^21103033201 is an apocalyptic number.

It is an amenable number.

21103033201 is a deficient number, since it is larger than the sum of its proper divisors (1764351).

21103033201 is a wasteful number, since it uses less digits than its factorization.

21103033201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764350.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21103033201 its reverse (10233030112), we get a palindrome (31336063313).

The spelling of 21103033201 in words is "twenty-one billion, one hundred three million, thirty-three thousand, two hundred one".