21331123414021 has 32 divisors (see below), whose sum is σ = 22588042853376. Its totient is φ = 20111196672000.

The previous prime is 21331123413961. The next prime is 21331123414079. The reversal of 21331123414021 is 12041432113312.

It is not a de Polignac number, because 21331123414021 - 2¹³ = 21331123405829 is a prime.

It is a super-2 number, since 2×21331123414021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331123414121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3243287485 + ... + 3243294061.

It is an arithmetic number, because the mean of its divisors is an integer number (705876339168).

Almost surely, 2^{21331123414021} is an apocalyptic number.

It is an amenable number.

21331123414021 is a deficient number, since it is larger than the sum of its proper divisors (1256919439355).

21331123414021 is a wasteful number, since it uses less digits than its factorization.

21331123414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9853.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 21331123414021 its reverse (12041432113312), we get a palindrome (33372555527333).

The spelling of 21331123414021 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred twenty-three million, four hundred fourteen thousand, twenty-one".