21021300121333 has 8 divisors (see below), whose sum is σ = 21746245881600. Its totient is φ = 20296359250608.

The previous prime is 21021300121307. The next prime is 21021300121373. The reversal of 21021300121333 is 33312100312012.

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 21021300121333 - 2¹³ = 21021300113141 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 (21021300121373) 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, 8962888 + ... + 11062366.

It is an arithmetic number, because the mean of its divisors is an integer number (2718280735200).

Almost surely, 2^{21021300121333} is an apocalyptic number.

It is an amenable number.

21021300121333 is a deficient number, since it is larger than the sum of its proper divisors (724945760267).

21021300121333 is a wasteful number, since it uses less digits than its factorization.

21021300121333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444771.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21021300121333 its reverse (33312100312012), we get a palindrome (54333400433345).

The spelling of 21021300121333 in words is "twenty-one trillion, twenty-one billion, three hundred million, one hundred twenty-one thousand, three hundred thirty-three".