222120221201 has 4 divisors (see below), whose sum is σ = 222157179504. Its totient is φ = 222083262900.

The previous prime is 222120221189. The next prime is 222120221209. The reversal of 222120221201 is 102122021222.

It is a happy number.

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 222120221201 - 2³⁴ = 204940352017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222120221201.

It is not an unprimeable number, because it can be changed into a prime (222120221209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18470135 + ... + 18482156.

It is an arithmetic number, because the mean of its divisors is an integer number (55539294876).

Almost surely, 2^222120221201 is an apocalyptic number.

It is an amenable number.

222120221201 is a deficient number, since it is larger than the sum of its proper divisors (36958303).

222120221201 is an equidigital number, since it uses as much as digits as its factorization.

222120221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36958302.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222120221201 its reverse (102122021222), we get a palindrome (324242242423).

The spelling of 222120221201 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred one".