32100223221 has 36 divisors (see below), whose sum is σ = 52722846540. Its totient is φ = 18783811200.

The previous prime is 32100223219. The next prime is 32100223241. The reversal of 32100223221 is 12232200123.

32100223221 is a `hidden beast` number, since 321 + 0 + 0 + 22 + 322 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7446827025 + 24653396196 = 86295^2 + 157014^2 .

It is not a de Polignac number, because 32100223221 - 2¹ = 32100223219 is a prime.

It is a super-2 number, since 2×32100223221² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32100223194 and 32100223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32100223241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 476640 + ... + 539801.

It is an arithmetic number, because the mean of its divisors is an integer number (1464523515).

Almost surely, 2^32100223221 is an apocalyptic number.

It is an amenable number.

32100223221 is a deficient number, since it is larger than the sum of its proper divisors (20622623319).

32100223221 is a wasteful number, since it uses less digits than its factorization.

32100223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016498 (or 1016484 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 32100223221 its reverse (12232200123), we get a palindrome (44332423344).

The spelling of 32100223221 in words is "thirty-two billion, one hundred million, two hundred twenty-three thousand, two hundred twenty-one".