32221312220213 has 4 divisors (see below), whose sum is σ = 32221966150860. Its totient is φ = 32220658289568.

The previous prime is 32221312220159. The next prime is 32221312220221. The reversal of 32221312220213 is 31202221312223.

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 7864698621649 + 24356613598564 = 2804407^2 + 4935242^2 .

It is a cyclic number.

It is not a de Polignac number, because 32221312220213 - 2¹⁶ = 32221312154677 is a prime.

It is a super-2 number, since 2×32221312220213² (a number of 28 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 (32221312220243) 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, 326891408 + ... + 326989961.

It is an arithmetic number, because the mean of its divisors is an integer number (8055491537715).

Almost surely, 2^{32221312220213} is an apocalyptic number.

It is an amenable number.

32221312220213 is a deficient number, since it is larger than the sum of its proper divisors (653930647).

32221312220213 is an equidigital number, since it uses as much as digits as its factorization.

32221312220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653930646.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 32221312220213 its reverse (31202221312223), we get a palindrome (63423533532436).

The spelling of 32221312220213 in words is "thirty-two trillion, two hundred twenty-one billion, three hundred twelve million, two hundred twenty thousand, two hundred thirteen".