121232211113 has 4 divisors (see below), whose sum is σ = 130557765828. Its totient is φ = 111906656400.

The previous prime is 121232211071. The next prime is 121232211119. The reversal of 121232211113 is 311112232121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15433589824 + 105798621289 = 124232^2 + 325267^2 .

It is a cyclic number.

It is not a de Polignac number, because 121232211113 - 2¹² = 121232207017 is a prime.

It is a super-2 number, since 2×121232211113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121232211119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4662777338 + ... + 4662777363.

It is an arithmetic number, because the mean of its divisors is an integer number (32639441457).

Almost surely, 2^121232211113 is an apocalyptic number.

121232211113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121232211113 is a deficient number, since it is larger than the sum of its proper divisors (9325554715).

121232211113 is an equidigital number, since it uses as much as digits as its factorization.

121232211113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9325554714.

The product of its digits is 144, while the sum is 20.

Adding to 121232211113 its reverse (311112232121), we get a palindrome (432344443234).

The spelling of 121232211113 in words is "one hundred twenty-one billion, two hundred thirty-two million, two hundred eleven thousand, one hundred thirteen".