1123432430021 has 4 divisors (see below), whose sum is σ = 1225562650944. Its totient is φ = 1021302209100.

The previous prime is 1123432429981. The next prime is 1123432430023. The reversal of 1123432430021 is 1200342343211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1123432430021 - 2¹⁸ = 1123432167877 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 (1123432430023) 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 3 ways as a sum of consecutive naturals, for example, 51065110445 + ... + 51065110466.

It is an arithmetic number, because the mean of its divisors is an integer number (306390662736).

Almost surely, 2^{1123432430021} is an apocalyptic number.

1123432430021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123432430021 is a deficient number, since it is larger than the sum of its proper divisors (102130220923).

1123432430021 is a wasteful number, since it uses less digits than its factorization.

1123432430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102130220922.

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

Adding to 1123432430021 its reverse (1200342343211), we get a palindrome (2323774773232).

The spelling of 1123432430021 in words is "one trillion, one hundred twenty-three billion, four hundred thirty-two million, four hundred thirty thousand, twenty-one".