221121040121123 has 8 divisors (see below), whose sum is σ = 221160117884928. Its totient is φ = 221081964325704.

The previous prime is 221121040121087. The next prime is 221121040121183. The reversal of 221121040121123 is 321121040121122.

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 221121040121123 - 2¹⁴ = 221121040104739 is a prime.

It is a super-2 number, since 2×221121040121123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221121040121183) 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, 234014540 + ... + 234957542.

It is an arithmetic number, because the mean of its divisors is an integer number (27645014735616).

Almost surely, 2^{221121040121123} is an apocalyptic number.

221121040121123 is a deficient number, since it is larger than the sum of its proper divisors (39077763805).

221121040121123 is an equidigital number, since it uses as much as digits as its factorization.

221121040121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984193.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 221121040121123 its reverse (321121040121122), we get a palindrome (542242080242245).

Subtracting 221121040121123 from its reverse (321121040121122), we obtain a palindrome (99999999999999).

The spelling of 221121040121123 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, forty million, one hundred twenty-one thousand, one hundred twenty-three".