222201002222121 has 32 divisors (see below), whose sum is σ = 325852803053568. Its totient is φ = 133827071146560.

The previous prime is 222201002222117. The next prime is 222201002222123. The reversal of 222201002222121 is 121222200102222.

It is not a de Polignac number, because 222201002222121 - 2² = 222201002222117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222201002222123) 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 31 ways as a sum of consecutive naturals, for example, 92864386 + ... + 95227076.

It is an arithmetic number, because the mean of its divisors is an integer number (10182900095424).

Almost surely, 2^{222201002222121} is an apocalyptic number.

It is an amenable number.

222201002222121 is a deficient number, since it is larger than the sum of its proper divisors (103651800831447).

222201002222121 is a wasteful number, since it uses less digits than its factorization.

222201002222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414061.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222201002222121 its reverse (121222200102222), we get a palindrome (343423202324343).

The spelling of 222201002222121 in words is "two hundred twenty-two trillion, two hundred one billion, two million, two hundred twenty-two thousand, one hundred twenty-one".