221102212212122 has 8 divisors (see below), whose sum is σ = 351162337042836. Its totient is φ = 104048099864512.

The previous prime is 221102212212059. The next prime is 221102212212187. The reversal of 221102212212122 is 221212212201122.

It can be written as a sum of positive squares in 2 ways, for example, as 221082373207921 + 19839004201 = 14868839^2 + 140851^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3251503120733 + ... + 3251503120800.

Almost surely, 2^{221102212212122} is an apocalyptic number.

221102212212122 is a deficient number, since it is larger than the sum of its proper divisors (130060124830714).

221102212212122 is a wasteful number, since it uses less digits than its factorization.

221102212212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503006241552.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221102212212122 its reverse (221212212201122), we get a palindrome (442314424413244).

The spelling of 221102212212122 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-two".