21101333023321 has 8 divisors (see below), whose sum is σ = 21242112128384. Its totient is φ = 20960634623760.

The previous prime is 21101333023319. The next prime is 21101333023327. The reversal of 21101333023321 is 12332033310112.

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 21101333023321 - 2¹ = 21101333023319 is a prime.

It is a super-2 number, since 2×21101333023321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101333023327) 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, 19651665 + ... + 20697598.

It is an arithmetic number, because the mean of its divisors is an integer number (2655264016048).

Almost surely, 2^{21101333023321} is an apocalyptic number.

It is an amenable number.

21101333023321 is a deficient number, since it is larger than the sum of its proper divisors (140779105063).

21101333023321 is a wasteful number, since it uses less digits than its factorization.

21101333023321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40352751.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21101333023321 its reverse (12332033310112), we get a palindrome (33433366333433).

The spelling of 21101333023321 in words is "twenty-one trillion, one hundred one billion, three hundred thirty-three million, twenty-three thousand, three hundred twenty-one".