21331032011201 has 8 divisors (see below), whose sum is σ = 23496141175104. Its totient is φ = 19203576919920.

The previous prime is 21331032011171. The next prime is 21331032011209. The reversal of 21331032011201 is 10211023013312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21331032011201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331032011209) 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, 9413516966 + ... + 9413519231.

It is an arithmetic number, because the mean of its divisors is an integer number (2937017646888).

Almost surely, 2^{21331032011201} is an apocalyptic number.

It is an amenable number.

21331032011201 is a deficient number, since it is larger than the sum of its proper divisors (2165109163903).

21331032011201 is a wasteful number, since it uses less digits than its factorization.

21331032011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18827036311.

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

Adding to 21331032011201 its reverse (10211023013312), we get a palindrome (31542055024513).

The spelling of 21331032011201 in words is "twenty-one trillion, three hundred thirty-one billion, thirty-two million, eleven thousand, two hundred one".