43122432021 has 8 divisors (see below), whose sum is σ = 57517187904. Its totient is φ = 28737982080.

The previous prime is 43122431969. The next prime is 43122432071. The reversal of 43122432021 is 12023422134.

It is a happy number.

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

It is not a de Polignac number, because 43122432021 - 2⁹ = 43122431509 is a prime.

It is a super-2 number, since 2×43122432021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43122431982 and 43122432000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43122432071) 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, 2566716 + ... + 2583461.

It is an arithmetic number, because the mean of its divisors is an integer number (7189648488).

Almost surely, 2^43122432021 is an apocalyptic number.

It is an amenable number.

43122432021 is a deficient number, since it is larger than the sum of its proper divisors (14394755883).

43122432021 is a wasteful number, since it uses less digits than its factorization.

43122432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152971.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 43122432021 its reverse (12023422134), we get a palindrome (55145854155).

The spelling of 43122432021 in words is "forty-three billion, one hundred twenty-two million, four hundred thirty-two thousand, twenty-one".