43313001221 has 8 divisors (see below), whose sum is σ = 49507527360. Its totient is φ = 37120213728.

The previous prime is 43313001209. The next prime is 43313001227. The reversal of 43313001221 is 12210031334.

43313001221 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 a cyclic number.

It is not a de Polignac number, because 43313001221 - 2²² = 43308806917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43313001193 and 43313001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43313001227) 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, 380831 + ... + 481308.

It is an arithmetic number, because the mean of its divisors is an integer number (6188440920).

Almost surely, 2^43313001221 is an apocalyptic number.

It is an amenable number.

43313001221 is a deficient number, since it is larger than the sum of its proper divisors (6194526139).

43313001221 is an equidigital number, since it uses as much as digits as its factorization.

43313001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869323.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 43313001221 its reverse (12210031334), we get a palindrome (55523032555).

The spelling of 43313001221 in words is "forty-three billion, three hundred thirteen million, one thousand, two hundred twenty-one".