21331131200013 has 8 divisors (see below), whose sum is σ = 28485063412128. Its totient is φ = 14198976560624.

The previous prime is 21331131199969. The next prime is 21331131200039. The reversal of 21331131200013 is 31000213113312.

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 not a de Polignac number, because 21331131200013 - 2¹⁶ = 21331131134477 is a prime.

It is a super-2 number, since 2×21331131200013² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331131202013) 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, 5444390895 + ... + 5444394812.

It is an arithmetic number, because the mean of its divisors is an integer number (3560632926516).

Almost surely, 2^{21331131200013} is an apocalyptic number.

It is an amenable number.

21331131200013 is a deficient number, since it is larger than the sum of its proper divisors (7153932212115).

21331131200013 is a wasteful number, since it uses less digits than its factorization.

21331131200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888786363.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21331131200013 its reverse (31000213113312), we get a palindrome (52331344313325).

The spelling of 21331131200013 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred thirty-one million, two hundred thousand, thirteen".