21312130103133 has 128 divisors (see below), whose sum is σ = 32304174465024. Its totient is φ = 12432592972800.

The previous prime is 21312130103101. The next prime is 21312130103141. The reversal of 21312130103133 is 33130103121312.

It is not a de Polignac number, because 21312130103133 - 2⁵ = 21312130103101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312130103233) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2138264316 + ... + 2138274282.

It is an arithmetic number, because the mean of its divisors is an integer number (252376363008).

Almost surely, 2^{21312130103133} is an apocalyptic number.

It is an amenable number.

21312130103133 is a deficient number, since it is larger than the sum of its proper divisors (10992044361891).

21312130103133 is a wasteful number, since it uses less digits than its factorization.

21312130103133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10575.

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

Adding to 21312130103133 its reverse (33130103121312), we get a palindrome (54442233224445).

The spelling of 21312130103133 in words is "twenty-one trillion, three hundred twelve billion, one hundred thirty million, one hundred three thousand, one hundred thirty-three".