21333130101 has 6 divisors (see below), whose sum is σ = 30814521270. Its totient is φ = 14222086728.

The previous prime is 21333130087. The next prime is 21333130121. The reversal of 21333130101 is 10103133312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17161262001 + 4171868100 = 131001^2 + 64590^2 .

It is not a de Polignac number, because 21333130101 - 2⁶ = 21333130037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333130121) 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 5 ways as a sum of consecutive naturals, for example, 1185173886 + ... + 1185173903.

It is an arithmetic number, because the mean of its divisors is an integer number (5135753545).

Almost surely, 2^21333130101 is an apocalyptic number.

It is an amenable number.

21333130101 is a deficient number, since it is larger than the sum of its proper divisors (9481391169).

21333130101 is a wasteful number, since it uses less digits than its factorization.

21333130101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370347795 (or 2370347792 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21333130101 its reverse (10103133312), we get a palindrome (31436263413).

The spelling of 21333130101 in words is "twenty-one billion, three hundred thirty-three million, one hundred thirty thousand, one hundred one".