222120011201221 has 32 divisors (see below), whose sum is σ = 257155213835520. Its totient is φ = 187921366972416.

The previous prime is 222120011201191. The next prime is 222120011201239. The reversal of 222120011201221 is 122102110021222.

It is not a de Polignac number, because 222120011201221 - 2⁵ = 222120011201189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120011201281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2806880571 + ... + 2806959703.

It is an arithmetic number, because the mean of its divisors is an integer number (8036100432360).

Almost surely, 2^{222120011201221} is an apocalyptic number.

It is an amenable number.

222120011201221 is a deficient number, since it is larger than the sum of its proper divisors (35035202634299).

222120011201221 is a wasteful number, since it uses less digits than its factorization.

222120011201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90253.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222120011201221 its reverse (122102110021222), we get a palindrome (344222121222443).

The spelling of 222120011201221 in words is "two hundred twenty-two trillion, one hundred twenty billion, eleven million, two hundred one thousand, two hundred twenty-one".