21020023310133 has 8 divisors (see below), whose sum is σ = 28026737460928. Its totient is φ = 14013329016384.

The previous prime is 21020023310053. The next prime is 21020023310179. The reversal of 21020023310133 is 33101332002012.

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

It is not a de Polignac number, because 21020023310133 - 2¹⁴ = 21020023293749 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 (21020023310233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2288185 + ... + 6875742.

It is an arithmetic number, because the mean of its divisors is an integer number (3503342182616).

Almost surely, 2^{21020023310133} is an apocalyptic number.

It is an amenable number.

21020023310133 is a deficient number, since it is larger than the sum of its proper divisors (7006714150795).

21020023310133 is an equidigital number, since it uses as much as digits as its factorization.

21020023310133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9928523.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21020023310133 its reverse (33101332002012), we get a palindrome (54121355312145).

The spelling of 21020023310133 in words is "twenty-one trillion, twenty billion, twenty-three million, three hundred ten thousand, one hundred thirty-three".