133121112011111 has 4 divisors (see below), whose sum is σ = 152138413726992. Its totient is φ = 114103810295232.

The previous prime is 133121112011099. The next prime is 133121112011131. The reversal of 133121112011111 is 111110211121331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133121112011111 - 2⁶ = 133121112011047 is a prime.

It is a super-2 number, since 2×133121112011111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133121112011131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9508650857930 + ... + 9508650857943.

It is an arithmetic number, because the mean of its divisors is an integer number (38034603431748).

Almost surely, 2^{133121112011111} is an apocalyptic number.

133121112011111 is a deficient number, since it is larger than the sum of its proper divisors (19017301715881).

133121112011111 is an equidigital number, since it uses as much as digits as its factorization.

133121112011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19017301715880.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 133121112011111 its reverse (111110211121331), we get a palindrome (244231323132442).

The spelling of 133121112011111 in words is "one hundred thirty-three trillion, one hundred twenty-one billion, one hundred twelve million, eleven thousand, one hundred eleven".