222201121002121 has 4 divisors (see below), whose sum is σ = 225330714255744. Its totient is φ = 219071527748500.

The previous prime is 222201121002101. The next prime is 222201121002151. The reversal of 222201121002121 is 121200121102222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222201121002121 - 2⁵ = 222201121002089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222201121002101) 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 3 ways as a sum of consecutive naturals, for example, 1564796626705 + ... + 1564796626846.

It is an arithmetic number, because the mean of its divisors is an integer number (56332678563936).

Almost surely, 2^{222201121002121} is an apocalyptic number.

It is an amenable number.

222201121002121 is a deficient number, since it is larger than the sum of its proper divisors (3129593253623).

222201121002121 is an equidigital number, since it uses as much as digits as its factorization.

222201121002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129593253622.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222201121002121 its reverse (121200121102222), we get a palindrome (343401242104343).

The spelling of 222201121002121 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred twenty-one million, two thousand, one hundred twenty-one".