133454132221 has 2 divisors, whose sum is σ = 133454132222. Its totient is φ = 133454132220.

The previous prime is 133454132209. The next prime is 133454132239. The reversal of 133454132221 is 122231454331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129423660025 + 4030472196 = 359755^2 + 63486^2 .

It is a cyclic number.

It is not a de Polignac number, because 133454132221 - 2²⁵ = 133420577789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133454132291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66727066110 + 66727066111.

It is an arithmetic number, because the mean of its divisors is an integer number (66727066111).

Almost surely, 2^133454132221 is an apocalyptic number.

It is an amenable number.

133454132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

133454132221 is an equidigital number, since it uses as much as digits as its factorization.

133454132221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

Adding to 133454132221 its reverse (122231454331), we get a palindrome (255685586552).

The spelling of 133454132221 in words is "one hundred thirty-three billion, four hundred fifty-four million, one hundred thirty-two thousand, two hundred twenty-one".