133311123220121 has 24 divisors (see below), whose sum is σ = 168783836497920. Its totient is φ = 103060853945280.

The previous prime is 133311123220097. The next prime is 133311123220123. The reversal of 133311123220121 is 121022321113331.

It is not a de Polignac number, because 133311123220121 - 2¹⁰ = 133311123219097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133311123220123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 619546436 + ... + 619761573.

It is an arithmetic number, because the mean of its divisors is an integer number (7032659854080).

Almost surely, 2^{133311123220121} is an apocalyptic number.

133311123220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133311123220121 is a deficient number, since it is larger than the sum of its proper divisors (35472713277799).

133311123220121 is a wasteful number, since it uses less digits than its factorization.

133311123220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239308165 (or 1239308154 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 133311123220121 its reverse (121022321113331), we get a palindrome (254333444333452).

The spelling of 133311123220121 in words is "one hundred thirty-three trillion, three hundred eleven billion, one hundred twenty-three million, two hundred twenty thousand, one hundred twenty-one".