32121101221 has 4 divisors (see below), whose sum is σ = 35041201344. Its totient is φ = 29201001100.

The previous prime is 32121101209. The next prime is 32121101251. The reversal of 32121101221 is 12210112123.

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.

It is a cyclic number.

It is not a de Polignac number, because 32121101221 - 2¹⁵ = 32121068453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32121101195 and 32121101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121101251) 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 3 ways as a sum of consecutive naturals, for example, 1460050045 + ... + 1460050066.

It is an arithmetic number, because the mean of its divisors is an integer number (8760300336).

Almost surely, 2^32121101221 is an apocalyptic number.

It is an amenable number.

32121101221 is a deficient number, since it is larger than the sum of its proper divisors (2920100123).

32121101221 is a wasteful number, since it uses less digits than its factorization.

32121101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920100122.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 32121101221 its reverse (12210112123), we get a palindrome (44331213344).

The spelling of 32121101221 in words is "thirty-two billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty-one".