221310232011123 has 8 divisors (see below), whose sum is σ = 299122505366928. Its totient is φ = 145519056664704.

The previous prime is 221310232011119. The next prime is 221310232011181. The reversal of 221310232011123 is 321110232013122.

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

It is not a de Polignac number, because 221310232011123 - 2² = 221310232011119 is a prime.

It is a super-2 number, since 2×221310232011123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221310232011093 and 221310232011102.

It is not an unprimeable number, because it can be changed into a prime (221310232011103) 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, 505274502090 + ... + 505274502527.

It is an arithmetic number, because the mean of its divisors is an integer number (37390313170866).

Almost surely, 2^{221310232011123} is an apocalyptic number.

221310232011123 is a deficient number, since it is larger than the sum of its proper divisors (77812273355805).

221310232011123 is a wasteful number, since it uses less digits than its factorization.

221310232011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010549004693.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221310232011123 its reverse (321110232013122), we get a palindrome (542420464024245).

The spelling of 221310232011123 in words is "two hundred twenty-one trillion, three hundred ten billion, two hundred thirty-two million, eleven thousand, one hundred twenty-three".