43421321111 has 8 divisors (see below), whose sum is σ = 49632869280. Its totient is φ = 37211898528.

The previous prime is 43421321059. The next prime is 43421321117. The reversal of 43421321111 is 11112312434.

43421321111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 43421321111 - 2³⁴ = 26241451927 is a prime.

It is a super-2 number, since 2×43421321111² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43421321117) 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, 487376 + ... + 569541.

It is an arithmetic number, because the mean of its divisors is an integer number (6204108660).

Almost surely, 2^43421321111 is an apocalyptic number.

43421321111 is a deficient number, since it is larger than the sum of its proper divisors (6211548169).

43421321111 is a wasteful number, since it uses less digits than its factorization.

43421321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062793.

The product of its digits is 576, while the sum is 23.

Adding to 43421321111 its reverse (11112312434), we get a palindrome (54533633545).

The spelling of 43421321111 in words is "forty-three billion, four hundred twenty-one million, three hundred twenty-one thousand, one hundred eleven".