133624121 has 2 divisors, whose sum is σ = 133624122. Its totient is φ = 133624120.

The previous prime is 133624103. The next prime is 133624133. The reversal of 133624121 is 121426331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70644025 + 62980096 = 8405^2 + 7936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133624121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133624021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66812060 + 66812061.

It is an arithmetic number, because the mean of its divisors is an integer number (66812061).

Almost surely, 2^133624121 is an apocalyptic number.

It is an amenable number.

133624121 is a deficient number, since it is larger than the sum of its proper divisors (1).

133624121 is an equidigital number, since it uses as much as digits as its factorization.

133624121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 133624121 is about 11559.5900013798. The cubic root of 133624121 is about 511.2440741537.

The spelling of 133624121 in words is "one hundred thirty-three million, six hundred twenty-four thousand, one hundred twenty-one".