221342031123 has 8 divisors (see below), whose sum is σ = 295132627200. Its totient is φ = 147556394568.

The previous prime is 221342031037. The next prime is 221342031137. The reversal of 221342031123 is 321130243122.

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

It is not a de Polignac number, because 221342031123 - 2¹⁰ = 221342030099 is a prime.

It is a super-2 number, since 2×221342031123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221342031093 and 221342031102.

It is not an unprimeable number, because it can be changed into a prime (221342031223) 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 7 ways as a sum of consecutive naturals, for example, 1134463 + ... + 1315176.

It is an arithmetic number, because the mean of its divisors is an integer number (36891578400).

Almost surely, 2^221342031123 is an apocalyptic number.

221342031123 is a deficient number, since it is larger than the sum of its proper divisors (73790596077).

221342031123 is a wasteful number, since it uses less digits than its factorization.

221342031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479761.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221342031123 its reverse (321130243122), we get a palindrome (542472274245).

The spelling of 221342031123 in words is "two hundred twenty-one billion, three hundred forty-two million, thirty-one thousand, one hundred twenty-three".