221122102121 has 8 divisors (see below), whose sum is σ = 221336755584. Its totient is φ = 220907535120.

The previous prime is 221122102093. The next prime is 221122102133. The reversal of 221122102121 is 121201221122.

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 221122102121 - 2⁶ = 221122102057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221122102121.

It is not an unprimeable number, because it can be changed into a prime (221122102171) 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 7 ways as a sum of consecutive naturals, for example, 5847551 + ... + 5885243.

It is an arithmetic number, because the mean of its divisors is an integer number (27667094448).

Almost surely, 2^221122102121 is an apocalyptic number.

It is an amenable number.

221122102121 is a deficient number, since it is larger than the sum of its proper divisors (214653463).

221122102121 is a wasteful number, since it uses less digits than its factorization.

221122102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43231.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221122102121 its reverse (121201221122), we get a palindrome (342323323243).

The spelling of 221122102121 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-one".