43212221023 has 4 divisors (see below), whose sum is σ = 44702297640. Its totient is φ = 41722144408.

The previous prime is 43212221011. The next prime is 43212221057. The reversal of 43212221023 is 32012221234.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43212221023 - 2⁹ = 43212220511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43212220985 and 43212221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43212021023) 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, 745038265 + ... + 745038322.

It is an arithmetic number, because the mean of its divisors is an integer number (11175574410).

Almost surely, 2^43212221023 is an apocalyptic number.

43212221023 is a deficient number, since it is larger than the sum of its proper divisors (1490076617).

43212221023 is a wasteful number, since it uses less digits than its factorization.

43212221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490076616.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 43212221023 its reverse (32012221234), we get a palindrome (75224442257).

The spelling of 43212221023 in words is "forty-three billion, two hundred twelve million, two hundred twenty-one thousand, twenty-three".