133429213081 has 2 divisors, whose sum is σ = 133429213082. Its totient is φ = 133429213080.

The previous prime is 133429213079. The next prime is 133429213087. The reversal of 133429213081 is 180312924331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106184739600 + 27244473481 = 325860^2 + 165059^2 .

It is an emirp because it is prime and its reverse (180312924331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133429213081 - 2¹ = 133429213079 is a prime.

It is a super-2 number, since 2×133429213081² (a number of 23 digits) contains 22 as substring.

Together with 133429213079, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 133429213081.

It is not a weakly prime, because it can be changed into another prime (133429213087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66714606540 + 66714606541.

It is an arithmetic number, because the mean of its divisors is an integer number (66714606541).

Almost surely, 2^133429213081 is an apocalyptic number.

It is an amenable number.

133429213081 is a deficient number, since it is larger than the sum of its proper divisors (1).

133429213081 is an equidigital number, since it uses as much as digits as its factorization.

133429213081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 133429213081 in words is "one hundred thirty-three billion, four hundred twenty-nine million, two hundred thirteen thousand, eighty-one".