21033003101 has 32 divisors (see below), whose sum is σ = 25072312320. Its totient is φ = 17450193600.

The previous prime is 21033003077. The next prime is 21033003107. The reversal of 21033003101 is 10130033012.

It is a cyclic number.

It is not a de Polignac number, because 21033003101 - 2¹⁴ = 21032986717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033003107) 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 31 ways as a sum of consecutive naturals, for example, 400496 + ... + 449958.

It is an arithmetic number, because the mean of its divisors is an integer number (783509760).

Almost surely, 2^21033003101 is an apocalyptic number.

It is an amenable number.

21033003101 is a deficient number, since it is larger than the sum of its proper divisors (4039309219).

21033003101 is a wasteful number, since it uses less digits than its factorization.

21033003101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49577.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21033003101 its reverse (10130033012), we get a palindrome (31163036113).

The spelling of 21033003101 in words is "twenty-one billion, thirty-three million, three thousand, one hundred one".