222120132221 has 12 divisors (see below), whose sum is σ = 241063633728. Its totient is φ = 204571068624.

The previous prime is 222120132211. The next prime is 222120132259. The reversal of 222120132221 is 122231021222.

It is a de Polignac number, because none of the positive numbers 2^k-222120132221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222120132193 and 222120132202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120132211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1408565 + ... + 1558298.

It is an arithmetic number, because the mean of its divisors is an integer number (20088636144).

Almost surely, 2^222120132221 is an apocalyptic number.

It is an amenable number.

222120132221 is a deficient number, since it is larger than the sum of its proper divisors (18943501507).

222120132221 is a wasteful number, since it uses less digits than its factorization.

222120132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967332 (or 2967319 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 222120132221 its reverse (122231021222), we get a palindrome (344351153443).

The spelling of 222120132221 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred thirty-two thousand, two hundred twenty-one".