133042143221 has 4 divisors (see below), whose sum is σ = 143276154252. Its totient is φ = 122808132192.

The previous prime is 133042143181. The next prime is 133042143229. The reversal of 133042143221 is 122341240331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5842920721 + 127199222500 = 76439^2 + 356650^2 .

It is a cyclic number.

It is not a de Polignac number, because 133042143221 - 2¹⁰ = 133042142197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133042143229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5117005496 + ... + 5117005521.

It is an arithmetic number, because the mean of its divisors is an integer number (35819038563).

Almost surely, 2^133042143221 is an apocalyptic number.

It is an amenable number.

133042143221 is a deficient number, since it is larger than the sum of its proper divisors (10234011031).

133042143221 is a wasteful number, since it uses less digits than its factorization.

133042143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10234011030.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 133042143221 its reverse (122341240331), we get a palindrome (255383383552).

The spelling of 133042143221 in words is "one hundred thirty-three billion, forty-two million, one hundred forty-three thousand, two hundred twenty-one".