222112120212121 has 4 divisors (see below), whose sum is σ = 222826307094144. Its totient is φ = 221397933330100.

The previous prime is 222112120212113. The next prime is 222112120212271. The reversal of 222112120212121 is 121212021211222.

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 222112120212121 - 2³ = 222112120212113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222112120212092 and 222112120212101.

It is not an unprimeable number, because it can be changed into a prime (222112120212821) 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, 357093440545 + ... + 357093441166.

It is an arithmetic number, because the mean of its divisors is an integer number (55706576773536).

Almost surely, 2^{222112120212121} is an apocalyptic number.

It is an amenable number.

222112120212121 is a deficient number, since it is larger than the sum of its proper divisors (714186882023).

222112120212121 is an equidigital number, since it uses as much as digits as its factorization.

222112120212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714186882022.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222112120212121 its reverse (121212021211222), we get a palindrome (343324141423343).

The spelling of 222112120212121 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred twenty million, two hundred twelve thousand, one hundred twenty-one".