222000121222121 has 8 divisors (see below), whose sum is σ = 246286729245600. Its totient is φ = 198397643002240.

The previous prime is 222000121222031. The next prime is 222000121222127. The reversal of 222000121222121 is 121222121000222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222000121222121 - 2¹⁸ = 222000120959977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222000121222093 and 222000121222102.

It is not an unprimeable number, because it can be changed into a prime (222000121222127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171032450216 + ... + 171032451513.

It is an arithmetic number, because the mean of its divisors is an integer number (30785841155700).

Almost surely, 2^{222000121222121} is an apocalyptic number.

It is an amenable number.

222000121222121 is a deficient number, since it is larger than the sum of its proper divisors (24286608023479).

222000121222121 is a wasteful number, since it uses less digits than its factorization.

222000121222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342064901799.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222000121222121 its reverse (121222121000222), we get a palindrome (343222242222343).

It can be divided in two parts, 222000 and 121222121, that added together give a palindrome (121444121).

The spelling of 222000121222121 in words is "two hundred twenty-two trillion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-one".