222000122121 has 16 divisors (see below), whose sum is σ = 314125891200. Its totient is φ = 138976881408.

The previous prime is 222000122119. The next prime is 222000122167. The reversal of 222000122121 is 121221000222.

It is not a de Polignac number, because 222000122121 - 2¹ = 222000122119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222000122121.

It is not an unprimeable number, because it can be changed into a prime (222000122021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4935406 + ... + 4980183.

It is an arithmetic number, because the mean of its divisors is an integer number (19632868200).

Almost surely, 2^222000122121 is an apocalyptic number.

It is an amenable number.

222000122121 is a deficient number, since it is larger than the sum of its proper divisors (92125769079).

222000122121 is a wasteful number, since it uses less digits than its factorization.

222000122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9916048.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222000122121 its reverse (121221000222), we get a palindrome (343221122343).

The spelling of 222000122121 in words is "two hundred twenty-two billion, one hundred twenty-two thousand, one hundred twenty-one".