20111031303121 has 8 divisors (see below), whose sum is σ = 21963179908800. Its totient is φ = 18262861536240.

The previous prime is 20111031303067. The next prime is 20111031303149. The reversal of 20111031303121 is 12130313011102.

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

It is a cyclic number.

It is not a de Polignac number, because 20111031303121 - 2⁴¹ = 17912008047569 is a prime.

It is a super-2 number, since 2×20111031303121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111031303721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994699126 + ... + 994719343.

It is an arithmetic number, because the mean of its divisors is an integer number (2745397488600).

Almost surely, 2^{20111031303121} is an apocalyptic number.

It is an amenable number.

20111031303121 is a deficient number, since it is larger than the sum of its proper divisors (1852148605679).

20111031303121 is a wasteful number, since it uses less digits than its factorization.

20111031303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989419399.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20111031303121 its reverse (12130313011102), we get a palindrome (32241344314223).

The spelling of 20111031303121 in words is "twenty trillion, one hundred eleven billion, thirty-one million, three hundred three thousand, one hundred twenty-one".