133031221969 has 2 divisors, whose sum is σ = 133031221970. Its totient is φ = 133031221968.

The previous prime is 133031221943. The next prime is 133031222047. The reversal of 133031221969 is 969122130331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132924409744 + 106812225 = 364588^2 + 10335^2 .

It is a cyclic number.

It is not a de Polignac number, because 133031221969 - 2⁵ = 133031221937 is a prime.

It is a super-2 number, since 2×133031221969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133031227969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66515610984 + 66515610985.

It is an arithmetic number, because the mean of its divisors is an integer number (66515610985).

Almost surely, 2^133031221969 is an apocalyptic number.

It is an amenable number.

133031221969 is a deficient number, since it is larger than the sum of its proper divisors (1).

133031221969 is an equidigital number, since it uses as much as digits as its factorization.

133031221969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 133031221969 in words is "one hundred thirty-three billion, thirty-one million, two hundred twenty-one thousand, nine hundred sixty-nine".