12222021543 has 8 divisors (see below), whose sum is σ = 17004551808. Its totient is φ = 7793752824.

The previous prime is 12222021521. The next prime is 12222021557. The reversal of 12222021543 is 34512022221.

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

It is not a de Polignac number, because 12222021543 - 2¹⁰ = 12222020519 is a prime.

It is a super-2 number, since 2×12222021543² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222021583) 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, 88565305 + ... + 88565442.

It is an arithmetic number, because the mean of its divisors is an integer number (2125568976).

Almost surely, 2^12222021543 is an apocalyptic number.

12222021543 is a deficient number, since it is larger than the sum of its proper divisors (4782530265).

12222021543 is a wasteful number, since it uses less digits than its factorization.

12222021543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177130773.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 12222021543 its reverse (34512022221), we get a palindrome (46734043764).

The spelling of 12222021543 in words is "twelve billion, two hundred twenty-two million, twenty-one thousand, five hundred forty-three".