222212101121 has 4 divisors (see below), whose sum is σ = 222586827012. Its totient is φ = 221837375232.

The previous prime is 222212100977. The next prime is 222212101127. The reversal of 222212101121 is 121101212222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69624210496 + 152587890625 = 263864^2 + 390625^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212101121 - 2¹⁴ = 222212084737 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 222212101121.

It is not an unprimeable number, because it can be changed into a prime (222212101127) 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, 187362056 + ... + 187363241.

It is an arithmetic number, because the mean of its divisors is an integer number (55646706753).

Almost surely, 2^222212101121 is an apocalyptic number.

It is an amenable number.

222212101121 is a deficient number, since it is larger than the sum of its proper divisors (374725891).

222212101121 is an equidigital number, since it uses as much as digits as its factorization.

222212101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374725890.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222212101121 its reverse (121101212222), we get a palindrome (343313313343).

It can be divided in two parts, 222212101 and 121, that added together give a palindrome (222212222).

The spelling of 222212101121 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred one thousand, one hundred twenty-one".