32231212100221 has 2 divisors, whose sum is σ = 32231212100222. Its totient is φ = 32231212100220.

The previous prime is 32231212100147. The next prime is 32231212100291. The reversal of 32231212100221 is 12200121213223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22137495502500 + 10093716597721 = 4705050^2 + 3177061^2 .

It is an emirp because it is prime and its reverse (12200121213223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32231212100221 - 2⁷ = 32231212100093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32231212100192 and 32231212100201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32231212100291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16115606050110 + 16115606050111.

It is an arithmetic number, because the mean of its divisors is an integer number (16115606050111).

Almost surely, 2^{32231212100221} is an apocalyptic number.

It is an amenable number.

32231212100221 is a deficient number, since it is larger than the sum of its proper divisors (1).

32231212100221 is an equidigital number, since it uses as much as digits as its factorization.

32231212100221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 32231212100221 its reverse (12200121213223), we get a palindrome (44431333313444).

The spelling of 32231212100221 in words is "thirty-two trillion, two hundred thirty-one billion, two hundred twelve million, one hundred thousand, two hundred twenty-one".