21332003210121 has 16 divisors (see below), whose sum is σ = 30214329358400. Its totient is φ = 13349240054208.

The previous prime is 21332003210117. The next prime is 21332003210153. The reversal of 21332003210121 is 12101230023312.

It is not a de Polignac number, because 21332003210121 - 2² = 21332003210117 is a prime.

It is a super-2 number, since 2×21332003210121² (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 (21332003210191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1716717046 + ... + 1716729471.

It is an arithmetic number, because the mean of its divisors is an integer number (1888395584900).

Almost surely, 2^{21332003210121} is an apocalyptic number.

It is an amenable number.

21332003210121 is a deficient number, since it is larger than the sum of its proper divisors (8882326148279).

21332003210121 is a wasteful number, since it uses less digits than its factorization.

21332003210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433446648.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21332003210121 its reverse (12101230023312), we get a palindrome (33433233233433).

The spelling of 21332003210121 in words is "twenty-one trillion, three hundred thirty-two billion, three million, two hundred ten thousand, one hundred twenty-one".