133344200021 has 8 divisors (see below), whose sum is σ = 135275793240. Its totient is φ = 131415443712.

The previous prime is 133344199987. The next prime is 133344200023. The reversal of 133344200021 is 120002443331.

It can be written as a sum of positive squares in 4 ways, for example, as 11832000625 + 121512199396 = 108775^2 + 348586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133344200021 - 2¹⁰ = 133344198997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133344200021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133344200023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614450 + ... + 802643.

It is an arithmetic number, because the mean of its divisors is an integer number (16909474155).

Almost surely, 2^133344200021 is an apocalyptic number.

It is an amenable number.

133344200021 is a deficient number, since it is larger than the sum of its proper divisors (1931593219).

133344200021 is a wasteful number, since it uses less digits than its factorization.

133344200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418455.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 133344200021 its reverse (120002443331), we get a palindrome (253346643352).

The spelling of 133344200021 in words is "one hundred thirty-three billion, three hundred forty-four million, two hundred thousand, twenty-one".