123101231221 has 8 divisors (see below), whose sum is σ = 124012779264. Its totient is φ = 122189871840.

The previous prime is 123101231213. The next prime is 123101231243. The reversal of 123101231221 is 122132101321.

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 123101231221 - 2³ = 123101231213 is a prime.

It is a super-2 number, since 2×123101231221² (a number of 23 digits) contains 22 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 (123101231321) 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, 1433916 + ... + 1517338.

It is an arithmetic number, because the mean of its divisors is an integer number (15501597408).

Almost surely, 2^123101231221 is an apocalyptic number.

It is an amenable number.

123101231221 is a deficient number, since it is larger than the sum of its proper divisors (911548043).

123101231221 is a wasteful number, since it uses less digits than its factorization.

123101231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94331.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123101231221 its reverse (122132101321), we get a palindrome (245233332542).

The spelling of 123101231221 in words is "one hundred twenty-three billion, one hundred one million, two hundred thirty-one thousand, two hundred twenty-one".