43211055121 has 32 divisors (see below), whose sum is σ = 51610890240. Its totient is φ = 35793451584.

The previous prime is 43211055119. The next prime is 43211055161. The reversal of 43211055121 is 12155011234.

It is a cyclic number.

It is not a de Polignac number, because 43211055121 - 2¹ = 43211055119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43211055161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548220 + ... + 622066.

It is an arithmetic number, because the mean of its divisors is an integer number (1612840320).

Almost surely, 2^43211055121 is an apocalyptic number.

It is an amenable number.

43211055121 is a deficient number, since it is larger than the sum of its proper divisors (8399835119).

43211055121 is a wasteful number, since it uses less digits than its factorization.

43211055121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74005.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 43211055121 its reverse (12155011234), we get a palindrome (55366066355).

The spelling of 43211055121 in words is "forty-three billion, two hundred eleven million, fifty-five thousand, one hundred twenty-one".