32310101221 has 2 divisors, whose sum is σ = 32310101222. Its totient is φ = 32310101220.

The previous prime is 32310101189. The next prime is 32310101237. The reversal of 32310101221 is 12210101323.

It is an a-pointer prime, because the next prime (32310101237) can be obtained adding 32310101221 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26891080225 + 5419020996 = 163985^2 + 73614^2 .

It is a cyclic number.

It is not a de Polignac number, because 32310101221 - 2⁵ = 32310101189 is a prime.

It is a super-2 number, since 2×32310101221² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32310101195 and 32310101204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32310101321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16155050610 + 16155050611.

It is an arithmetic number, because the mean of its divisors is an integer number (16155050611).

Almost surely, 2^32310101221 is an apocalyptic number.

It is an amenable number.

32310101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

32310101221 is an equidigital number, since it uses as much as digits as its factorization.

32310101221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 32310101221 its reverse (12210101323), we get a palindrome (44520202544).

The spelling of 32310101221 in words is "thirty-two billion, three hundred ten million, one hundred one thousand, two hundred twenty-one".