222121000200121 has 8 divisors (see below), whose sum is σ = 245726689082688. Its totient is φ = 199084123098000.

The previous prime is 222121000200091. The next prime is 222121000200139. The reversal of 222121000200121 is 121002000121222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 222121000200121 - 2⁵ = 222121000200089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222121000200095 and 222121000200104.

It is not an unprimeable number, because it can be changed into a prime (222121000204121) 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, 142202944290 + ... + 142202945851.

It is an arithmetic number, because the mean of its divisors is an integer number (30715836135336).

Almost surely, 2^{222121000200121} is an apocalyptic number.

It is an amenable number.

222121000200121 is a deficient number, since it is larger than the sum of its proper divisors (23605688882567).

222121000200121 is a wasteful number, since it uses less digits than its factorization.

222121000200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284405890223.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222121000200121 its reverse (121002000121222), we get a palindrome (343123000321343).

The spelling of 222121000200121 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred thousand, one hundred twenty-one".