123011110332221 has 16 divisors (see below), whose sum is σ = 130028532560640. Its totient is φ = 116181382443840.

The previous prime is 123011110332211. The next prime is 123011110332239. The reversal of 123011110332221 is 122233011110321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123011110332221 - 2⁶ = 123011110332157 is a prime.

It is a super-4 number, since 4×123011110332221⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011110332211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21063650 + ... + 26262131.

It is an arithmetic number, because the mean of its divisors is an integer number (8126783285040).

Almost surely, 2^{123011110332221} is an apocalyptic number.

It is an amenable number.

123011110332221 is a deficient number, since it is larger than the sum of its proper divisors (7017422228419).

123011110332221 is a wasteful number, since it uses less digits than its factorization.

123011110332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47327764.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 123011110332221 its reverse (122233011110321), we get a palindrome (245244121442542).

The spelling of 123011110332221 in words is "one hundred twenty-three trillion, eleven billion, one hundred ten million, three hundred thirty-two thousand, two hundred twenty-one".