21031132113330 has 16 divisors (see below), whose sum is σ = 50474717072064. Its totient is φ = 5608301896880.

The previous prime is 21031132113323. The next prime is 21031132113353. The reversal of 21031132113330 is 3331123113012.

It is a self number, because there is not a number n which added to its sum of digits gives 21031132113330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350518868526 + ... + 350518868585.

It is an arithmetic number, because the mean of its divisors is an integer number (3154669817004).

Almost surely, 2^{21031132113330} is an apocalyptic number.

21031132113330 is an abundant number, since it is smaller than the sum of its proper divisors (29443584958734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21031132113330 is a wasteful number, since it uses less digits than its factorization.

21031132113330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701037737121.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21031132113330 its reverse (3331123113012), we get a palindrome (24362255226342).

The spelling of 21031132113330 in words is "twenty-one trillion, thirty-one billion, one hundred thirty-two million, one hundred thirteen thousand, three hundred thirty".