12243432111021 has 24 divisors (see below), whose sum is σ = 17713155521984. Its totient is φ = 8149277082240.

The previous prime is 12243432111013. The next prime is 12243432111077. The reversal of 12243432111021 is 12011123434221.

12243432111021 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 343 + 211 + 102 + 1 = 666.

It is not a de Polignac number, because 12243432111021 - 2³ = 12243432111013 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 (12243432113021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43186485 + ... + 43469061.

Almost surely, 2^{12243432111021} is an apocalyptic number.

It is an amenable number.

12243432111021 is a deficient number, since it is larger than the sum of its proper divisors (5469723410963).

12243432111021 is a wasteful number, since it uses less digits than its factorization.

12243432111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290241 (or 290238 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 12243432111021 its reverse (12011123434221), we get a palindrome (24254555545242).

The spelling of 12243432111021 in words is "twelve trillion, two hundred forty-three billion, four hundred thirty-two million, one hundred eleven thousand, twenty-one".