12122122331 has 8 divisors (see below), whose sum is σ = 13799096064. Its totient is φ = 10540975720.

The previous prime is 12122122291. The next prime is 12122122429. The reversal of 12122122331 is 13322122121.

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

It is not a de Polignac number, because 12122122331 - 2⁶ = 12122122267 is a prime.

It is a super-2 number, since 2×12122122331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122122631) 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, 23956511 + ... + 23957016.

It is an arithmetic number, because the mean of its divisors is an integer number (1724887008).

Almost surely, 2^12122122331 is an apocalyptic number.

12122122331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12122122331 is a deficient number, since it is larger than the sum of its proper divisors (1676973733).

12122122331 is a wasteful number, since it uses less digits than its factorization.

12122122331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47913561.

The product of its digits is 288, while the sum is 20.

Adding to 12122122331 its reverse (13322122121), we get a palindrome (25444244452).

The spelling of 12122122331 in words is "twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, three hundred thirty-one".