222103212121 has 16 divisors (see below), whose sum is σ = 254367558144. Its totient is φ = 189973105344.

The previous prime is 222103212119. The next prime is 222103212139. The reversal of 222103212121 is 121212301222.

It is a cyclic number.

It is not a de Polignac number, because 222103212121 - 2¹ = 222103212119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222100212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6893776 + ... + 6925918.

It is an arithmetic number, because the mean of its divisors is an integer number (15897972384).

Almost surely, 2^222103212121 is an apocalyptic number.

It is an amenable number.

222103212121 is a deficient number, since it is larger than the sum of its proper divisors (32264346023).

222103212121 is a wasteful number, since it uses less digits than its factorization.

222103212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34200.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222103212121 its reverse (121212301222), we get a palindrome (343315513343).

The spelling of 222103212121 in words is "two hundred twenty-two billion, one hundred three million, two hundred twelve thousand, one hundred twenty-one".