133130231223121 has 16 divisors (see below), whose sum is σ = 147232692673920. Its totient is φ = 119361285486720.

The previous prime is 133130231223103. The next prime is 133130231223139. The reversal of 133130231223121 is 121322132031331.

It is an interprime number because it is at equal distance from previous prime (133130231223103) and next prime (133130231223139).

It is a cyclic number.

It is not a de Polignac number, because 133130231223121 - 2¹⁵ = 133130231190353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133130231223121.

It is not an unprimeable number, because it can be changed into a prime (133130231223151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5834215 + ... + 17329123.

It is an arithmetic number, because the mean of its divisors is an integer number (9202043292120).

Almost surely, 2^{133130231223121} is an apocalyptic number.

133130231223121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133130231223121 is a deficient number, since it is larger than the sum of its proper divisors (14102461450799).

133130231223121 is a wasteful number, since it uses less digits than its factorization.

133130231223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11509416.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 133130231223121 its reverse (121322132031331), we get a palindrome (254452363254452).

The spelling of 133130231223121 in words is "one hundred thirty-three trillion, one hundred thirty billion, two hundred thirty-one million, two hundred twenty-three thousand, one hundred twenty-one".