12121434331 has 8 divisors (see below), whose sum is σ = 12237873984. Its totient is φ = 12005053320.

The previous prime is 12121434329. The next prime is 12121434359. The reversal of 12121434331 is 13343412121.

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

It is not a de Polignac number, because 12121434331 - 2¹ = 12121434329 is a prime.

It is a super-2 number, since 2×12121434331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121434296 and 12121434305.

It is not an unprimeable number, because it can be changed into a prime (12121431331) 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, 480216 + ... + 504826.

It is an arithmetic number, because the mean of its divisors is an integer number (1529734248).

Almost surely, 2^12121434331 is an apocalyptic number.

12121434331 is a deficient number, since it is larger than the sum of its proper divisors (116439653).

12121434331 is a wasteful number, since it uses less digits than its factorization.

12121434331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29321.

The product of its digits is 1728, while the sum is 25.

Adding to 12121434331 its reverse (13343412121), we get a palindrome (25464846452).

The spelling of 12121434331 in words is "twelve billion, one hundred twenty-one million, four hundred thirty-four thousand, three hundred thirty-one".