13111332020121 has 16 divisors (see below), whose sum is σ = 18511313655744. Its totient is φ = 8226185746944.

The previous prime is 13111332020071. The next prime is 13111332020123. The reversal of 13111332020121 is 12102023311131.

It is not a de Polignac number, because 13111332020121 - 2¹⁸ = 13111331757977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13111332020123) 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, 7521940 + ... + 9099573.

It is an arithmetic number, because the mean of its divisors is an integer number (1156957103484).

Almost surely, 2^{13111332020121} is an apocalyptic number.

It is an amenable number.

13111332020121 is a deficient number, since it is larger than the sum of its proper divisors (5399981635623).

13111332020121 is a wasteful number, since it uses less digits than its factorization.

13111332020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16637000.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 13111332020121 its reverse (12102023311131), we get a palindrome (25213355331252).

The spelling of 13111332020121 in words is "thirteen trillion, one hundred eleven billion, three hundred thirty-two million, twenty thousand, one hundred twenty-one".