221102121201123 has 8 divisors (see below), whose sum is σ = 294802897079488. Its totient is φ = 147401379728424.

The previous prime is 221102121201079. The next prime is 221102121201133. The reversal of 221102121201123 is 321102121201122.

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

It is not a de Polignac number, because 221102121201123 - 2¹⁶ = 221102121135587 is a prime.

It is a super-2 number, since 2×221102121201123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221102121201123.

It is not an unprimeable number, because it can be changed into a prime (221102121201133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19639536 + ... + 28773522.

It is an arithmetic number, because the mean of its divisors is an integer number (36850362134936).

Almost surely, 2^{221102121201123} is an apocalyptic number.

221102121201123 is a deficient number, since it is larger than the sum of its proper divisors (73700775878365).

221102121201123 is an equidigital number, since it uses as much as digits as its factorization.

221102121201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17202833.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 221102121201123 its reverse (321102121201122), we get a palindrome (542204242402245).

Subtracting 221102121201123 from its reverse (321102121201122), we obtain a palindrome (99999999999999).

The spelling of 221102121201123 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-three".