21330013303131 has 16 divisors (see below), whose sum is σ = 30629958759456. Its totient is φ = 13125198882816.

The previous prime is 21330013303121. The next prime is 21330013303133. The reversal of 21330013303131 is 13130331003312.

It is not a de Polignac number, because 21330013303131 - 2¹¹ = 21330013301083 is a prime.

It is a super-2 number, since 2×21330013303131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21330013303133) 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, 19527120 + ... + 20590493.

It is an arithmetic number, because the mean of its divisors is an integer number (1914372422466).

Almost surely, 2^{21330013303131} is an apocalyptic number.

21330013303131 is a deficient number, since it is larger than the sum of its proper divisors (9299945456325).

21330013303131 is a wasteful number, since it uses less digits than its factorization.

21330013303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40131262.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 21330013303131 its reverse (13130331003312), we get a palindrome (34460344306443).

The spelling of 21330013303131 in words is "twenty-one trillion, three hundred thirty billion, thirteen million, three hundred three thousand, one hundred thirty-one".