21313232132109 has 16 divisors (see below), whose sum is σ = 28432453920000. Its totient is φ = 14201416362816.

The previous prime is 21313232132107. The next prime is 21313232132147. The reversal of 21313232132109 is 90123123231312.

It is not a de Polignac number, because 21313232132109 - 2¹ = 21313232132107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21313232132109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313232132107) 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, 337475467 + ... + 337538615.

It is an arithmetic number, because the mean of its divisors is an integer number (1777028370000).

Almost surely, 2^{21313232132109} is an apocalyptic number.

It is an amenable number.

21313232132109 is a deficient number, since it is larger than the sum of its proper divisors (7119221787891).

21313232132109 is a wasteful number, since it uses less digits than its factorization.

21313232132109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120004.

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 21313232132109 in words is "twenty-one trillion, three hundred thirteen billion, two hundred thirty-two million, one hundred thirty-two thousand, one hundred nine".