133232121 has 20 divisors (see below), whose sum is σ = 217120464. Its totient is φ = 80746200.

The previous prime is 133232107. The next prime is 133232137. The reversal of 133232121 is 121232331.

It is not a de Polignac number, because 133232121 - 2¹¹ = 133230073 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133232094 and 133232103.

It is not an unprimeable number, because it can be changed into a prime (133232171) 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 19 ways as a sum of consecutive naturals, for example, 73875 + ... + 75656.

Almost surely, 2^133232121 is an apocalyptic number.

133232121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133232121 is a deficient number, since it is larger than the sum of its proper divisors (83888343).

133232121 is a wasteful number, since it uses less digits than its factorization.

133232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149554 (or 149545 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 133232121 is about 11542.6219291806. The cubic root of 133232121 is about 510.7436555973.

Adding to 133232121 its reverse (121232331), we get a palindrome (254464452).

The spelling of 133232121 in words is "one hundred thirty-three million, two hundred thirty-two thousand, one hundred twenty-one".