43312402221 has 16 divisors (see below), whose sum is σ = 63099729408. Its totient is φ = 26208327600.

The previous prime is 43312402213. The next prime is 43312402283. The reversal of 43312402221 is 12220421334.

It is a happy number.

It is not a de Polignac number, because 43312402221 - 2³ = 43312402213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43312402191 and 43312402200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43312402921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019191 + ... + 1060836.

It is an arithmetic number, because the mean of its divisors is an integer number (3943733088).

Almost surely, 2^43312402221 is an apocalyptic number.

It is an amenable number.

43312402221 is a deficient number, since it is larger than the sum of its proper divisors (19787327187).

43312402221 is a wasteful number, since it uses less digits than its factorization.

43312402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080672.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 43312402221 its reverse (12220421334), we get a palindrome (55532823555).

The spelling of 43312402221 in words is "forty-three billion, three hundred twelve million, four hundred two thousand, two hundred twenty-one".