133021123121 has 4 divisors (see below), whose sum is σ = 133034227200. Its totient is φ = 133008019044.

The previous prime is 133021123087. The next prime is 133021123127. The reversal of 133021123121 is 121321120331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133021123121 - 2¹⁴ = 133021106737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133021123093 and 133021123102.

It is not an unprimeable number, because it can be changed into a prime (133021123127) 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 3 ways as a sum of consecutive naturals, for example, 6536801 + ... + 6557118.

It is an arithmetic number, because the mean of its divisors is an integer number (33258556800).

Almost surely, 2^133021123121 is an apocalyptic number.

It is an amenable number.

133021123121 is a deficient number, since it is larger than the sum of its proper divisors (13104079).

133021123121 is a wasteful number, since it uses less digits than its factorization.

133021123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13104078.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 133021123121 its reverse (121321120331), we get a palindrome (254342243452).

The spelling of 133021123121 in words is "one hundred thirty-three billion, twenty-one million, one hundred twenty-three thousand, one hundred twenty-one".