32112321221 has 4 divisors (see below), whose sum is σ = 32365174272. Its totient is φ = 31859468172.

The previous prime is 32112321191. The next prime is 32112321239. The reversal of 32112321221 is 12212321123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12212321123 = 347 ⋅35194009.

It is a cyclic number.

It is not a de Polignac number, because 32112321221 - 2²⁶ = 32045212357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32112321193 and 32112321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32112321281) 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 in 3 ways as a sum of consecutive naturals, for example, 126426335 + ... + 126426588.

It is an arithmetic number, because the mean of its divisors is an integer number (8091293568).

Almost surely, 2^32112321221 is an apocalyptic number.

It is an amenable number.

32112321221 is a deficient number, since it is larger than the sum of its proper divisors (252853051).

32112321221 is a wasteful number, since it uses less digits than its factorization.

32112321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252853050.

The product of its digits is 288, while the sum is 20.

Adding to 32112321221 its reverse (12212321123), we get a palindrome (44324642344).

The spelling of 32112321221 in words is "thirty-two billion, one hundred twelve million, three hundred twenty-one thousand, two hundred twenty-one".