1143522113521 has 8 divisors (see below), whose sum is σ = 1149326928000. Its totient is φ = 1137717884160.

The previous prime is 1143522113369. The next prime is 1143522113533. The reversal of 1143522113521 is 1253112253411.

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 1143522113521 - 2²¹ = 1143520016369 is a prime.

It is a super-2 number, since 2×1143522113521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143522113561) 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, 4081425 + ... + 4352593.

It is an arithmetic number, because the mean of its divisors is an integer number (143665866000).

Almost surely, 2^{1143522113521} is an apocalyptic number.

It is an amenable number.

1143522113521 is a deficient number, since it is larger than the sum of its proper divisors (5804814479).

1143522113521 is a wasteful number, since it uses less digits than its factorization.

1143522113521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292559.

The product of its digits is 7200, while the sum is 31.

Adding to 1143522113521 its reverse (1253112253411), we get a palindrome (2396634366932).

The spelling of 1143522113521 in words is "one trillion, one hundred forty-three billion, five hundred twenty-two million, one hundred thirteen thousand, five hundred twenty-one".