43120411221 has 4 divisors (see below), whose sum is σ = 57493881632. Its totient is φ = 28746940812.

The previous prime is 43120411211. The next prime is 43120411253. The reversal of 43120411221 is 12211402134.

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 not a de Polignac number, because 43120411221 - 2⁵ = 43120411189 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 (43120411211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7186735201 + ... + 7186735206.

It is an arithmetic number, because the mean of its divisors is an integer number (14373470408).

Almost surely, 2^43120411221 is an apocalyptic number.

It is an amenable number.

43120411221 is a deficient number, since it is larger than the sum of its proper divisors (14373470411).

43120411221 is a wasteful number, since it uses less digits than its factorization.

43120411221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14373470410.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 43120411221 its reverse (12211402134), we get a palindrome (55331813355).

The spelling of 43120411221 in words is "forty-three billion, one hundred twenty million, four hundred eleven thousand, two hundred twenty-one".