13111333020121 has 32 divisors (see below), whose sum is σ = 15389909203968. Its totient is φ = 10936978076160.

The previous prime is 13111333020109. The next prime is 13111333020211. The reversal of 13111333020121 is 12102033311131.

It is a cyclic number.

It is not a de Polignac number, because 13111333020121 - 2¹³ = 13111333011929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111333020092 and 13111333020101.

It is not an unprimeable number, because it can be changed into a prime (13111333020101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56072911 + ... + 56306251.

It is an arithmetic number, because the mean of its divisors is an integer number (480934662624).

Almost surely, 2^{13111333020121} is an apocalyptic number.

It is an amenable number.

13111333020121 is a deficient number, since it is larger than the sum of its proper divisors (2278576183847).

13111333020121 is a wasteful number, since it uses less digits than its factorization.

13111333020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234361.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 13111333020121 its reverse (12102033311131), we get a palindrome (25213366331252).

The spelling of 13111333020121 in words is "thirteen trillion, one hundred eleven billion, three hundred thirty-three million, twenty thousand, one hundred twenty-one".