20113132121 has 8 divisors (see below), whose sum is σ = 20398944384. Its totient is φ = 19827390240.

The previous prime is 20113132093. The next prime is 20113132141. The reversal of 20113132121 is 12123131102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20113132121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20113132121.

It is not an unprimeable number, because it can be changed into a prime (20113132141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 879980 + ... + 902546.

It is an arithmetic number, because the mean of its divisors is an integer number (2549868048).

Almost surely, 2^20113132121 is an apocalyptic number.

It is an amenable number.

20113132121 is a deficient number, since it is larger than the sum of its proper divisors (285812263).

20113132121 is a wasteful number, since it uses less digits than its factorization.

20113132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35191.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20113132121 its reverse (12123131102), we get a palindrome (32236263223).

The spelling of 20113132121 in words is "twenty billion, one hundred thirteen million, one hundred thirty-two thousand, one hundred twenty-one".