4132220312221 has 4 divisors (see below), whose sum is σ = 4132842922492. Its totient is φ = 4131597701952.

The previous prime is 4132220312203. The next prime is 4132220312243. The reversal of 4132220312221 is 1222130222314.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79588308996 + 4052632003225 = 282114^2 + 2013115^2 .

It is a cyclic number.

It is not a de Polignac number, because 4132220312221 - 2⁵ = 4132220312189 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 (4132220312281) 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, 311295180 + ... + 311308453.

It is an arithmetic number, because the mean of its divisors is an integer number (1033210730623).

Almost surely, 2^{4132220312221} is an apocalyptic number.

It is an amenable number.

4132220312221 is a deficient number, since it is larger than the sum of its proper divisors (622610271).

4132220312221 is an equidigital number, since it uses as much as digits as its factorization.

4132220312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622610270.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 4132220312221 its reverse (1222130222314), we get a palindrome (5354350534535).

The spelling of 4132220312221 in words is "four trillion, one hundred thirty-two billion, two hundred twenty million, three hundred twelve thousand, two hundred twenty-one".