21133313101 has 8 divisors (see below), whose sum is σ = 21690334008. Its totient is φ = 20578272000.

The previous prime is 21133313083. The next prime is 21133313137. The reversal of 21133313101 is 10131333112.

It can be written as a sum of positive squares in 4 ways, for example, as 137592900 + 20995720201 = 11730^2 + 144899^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21133313101 - 2¹⁷ = 21133182029 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 (21133313701) 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 7 ways as a sum of consecutive naturals, for example, 473310 + ... + 516031.

It is an arithmetic number, because the mean of its divisors is an integer number (2711291751).

Almost surely, 2^21133313101 is an apocalyptic number.

It is an amenable number.

21133313101 is a deficient number, since it is larger than the sum of its proper divisors (557020907).

21133313101 is an equidigital number, since it uses as much as digits as its factorization.

21133313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989903.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 21133313101 its reverse (10131333112), we get a palindrome (31264646213).

The spelling of 21133313101 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirteen thousand, one hundred one".