222002122100121 has 64 divisors (see below), whose sum is σ = 367609240615680. Its totient is φ = 131241211200000.

The previous prime is 222002122100027. The next prime is 222002122100123. The reversal of 222002122100121 is 121001221200222.

It is a happy number.

222002122100121 is a `hidden beast` number, since 2 + 220 + 0 + 212 + 210 + 0 + 1 + 21 = 666.

It is not a de Polignac number, because 222002122100121 - 2¹¹ = 222002122098073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222002122100094 and 222002122100103.

It is not an unprimeable number, because it can be changed into a prime (222002122100123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65328591 + ... + 68642763.

It is an arithmetic number, because the mean of its divisors is an integer number (5743894384620).

Almost surely, 2^{222002122100121} is an apocalyptic number.

It is an amenable number.

222002122100121 is a deficient number, since it is larger than the sum of its proper divisors (145607118515559).

222002122100121 is a wasteful number, since it uses less digits than its factorization.

222002122100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319735 (or 3319729 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222002122100121 its reverse (121001221200222), we get a palindrome (343003343300343).

The spelling of 222002122100121 in words is "two hundred twenty-two trillion, two billion, one hundred twenty-two million, one hundred thousand, one hundred twenty-one".