21102021301 has 8 divisors (see below), whose sum is σ = 22021248960. Its totient is φ = 20182939392.

The previous prime is 21102021299. The next prime is 21102021313. The reversal of 21102021301 is 10312020112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21102021301 - 2¹ = 21102021299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102021701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344110 + ... + 400768.

It is an arithmetic number, because the mean of its divisors is an integer number (2752656120).

Almost surely, 2^21102021301 is an apocalyptic number.

It is an amenable number.

21102021301 is a deficient number, since it is larger than the sum of its proper divisors (919227659).

21102021301 is a wasteful number, since it uses less digits than its factorization.

21102021301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72875.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21102021301 its reverse (10312020112), we get a palindrome (31414041413).

The spelling of 21102021301 in words is "twenty-one billion, one hundred two million, twenty-one thousand, three hundred one".