21120201033 has 4 divisors (see below), whose sum is σ = 28160268048. Its totient is φ = 14080134020.

The previous prime is 21120201029. The next prime is 21120201041. The reversal of 21120201033 is 33010202112.

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 21120201033 - 2² = 21120201029 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120201433) 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, 3520033503 + ... + 3520033508.

It is an arithmetic number, because the mean of its divisors is an integer number (7040067012).

Almost surely, 2^21120201033 is an apocalyptic number.

It is an amenable number.

21120201033 is a deficient number, since it is larger than the sum of its proper divisors (7040067015).

21120201033 is an equidigital number, since it uses as much as digits as its factorization.

21120201033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040067014.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21120201033 its reverse (33010202112), we get a palindrome (54130403145).

The spelling of 21120201033 in words is "twenty-one billion, one hundred twenty million, two hundred one thousand, thirty-three".