143266521161221 has 8 divisors (see below), whose sum is σ = 144067395588480. Its totient is φ = 142465652320992.

The previous prime is 143266521161207. The next prime is 143266521161329. The reversal of 143266521161221 is 122161125662341.

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 143266521161221 - 2⁹ = 143266521160709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143266521161201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56787001 + ... + 59256193.

It is an arithmetic number, because the mean of its divisors is an integer number (18008424448560).

Almost surely, 2^{143266521161221} is an apocalyptic number.

It is an amenable number.

143266521161221 is a deficient number, since it is larger than the sum of its proper divisors (800874427259).

143266521161221 is a wasteful number, since it uses less digits than its factorization.

143266521161221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793515.

The product of its digits is 207360, while the sum is 43.

The spelling of 143266521161221 in words is "one hundred forty-three trillion, two hundred sixty-six billion, five hundred twenty-one million, one hundred sixty-one thousand, two hundred twenty-one".