133123001121 has 80 divisors (see below), whose sum is σ = 222970397760. Its totient is φ = 78455018880.

The previous prime is 133123001119. The next prime is 133123001171. The reversal of 133123001121 is 121100321331.

133123001121 is a `hidden beast` number, since 1 + 331 + 2 + 300 + 11 + 21 = 666.

It is not a de Polignac number, because 133123001121 - 2¹ = 133123001119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133123001094 and 133123001103.

It is not an unprimeable number, because it can be changed into a prime (133123001171) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8766091 + ... + 8781263.

It is an arithmetic number, because the mean of its divisors is an integer number (2787129972).

Almost surely, 2^133123001121 is an apocalyptic number.

133123001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133123001121 is a deficient number, since it is larger than the sum of its proper divisors (89847396639).

133123001121 is a wasteful number, since it uses less digits than its factorization.

133123001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15468 (or 15459 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 133123001121 its reverse (121100321331), we get a palindrome (254223322452).

The spelling of 133123001121 in words is "one hundred thirty-three billion, one hundred twenty-three million, one thousand, one hundred twenty-one".