21331230011201 has 32 divisors (see below), whose sum is σ = 25938851253120. Its totient is φ = 17288880537600.

The previous prime is 21331230011183. The next prime is 21331230011251. The reversal of 21331230011201 is 10211003213312.

It is a happy number.

It is not a de Polignac number, because 21331230011201 - 2¹⁰ = 21331230010177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331230011251) 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, 33512825 + ... + 34143401.

It is an arithmetic number, because the mean of its divisors is an integer number (810589101660).

Almost surely, 2^{21331230011201} is an apocalyptic number.

It is an amenable number.

21331230011201 is a deficient number, since it is larger than the sum of its proper divisors (4607621241919).

21331230011201 is a wasteful number, since it uses less digits than its factorization.

21331230011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640145.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21331230011201 its reverse (10211003213312), we get a palindrome (31542233224513).

The spelling of 21331230011201 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred thirty million, eleven thousand, two hundred one".