21301002101 has 4 divisors (see below), whose sum is σ = 21312688512. Its totient is φ = 21289315692.

The previous prime is 21301002067. The next prime is 21301002109. The reversal of 21301002101 is 10120010312.

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 a de Polignac number, because none of the positive numbers 2^k-21301002101 is a prime.

It is a super-3 number, since 3×21301002101³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301002109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5840471 + ... + 5844116.

It is an arithmetic number, because the mean of its divisors is an integer number (5328172128).

Almost surely, 2^21301002101 is an apocalyptic number.

It is an amenable number.

21301002101 is a deficient number, since it is larger than the sum of its proper divisors (11686411).

21301002101 is a wasteful number, since it uses less digits than its factorization.

21301002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11686410.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21301002101 its reverse (10120010312), we get a palindrome (31421012413).

The spelling of 21301002101 in words is "twenty-one billion, three hundred one million, two thousand, one hundred one".