12121323035 has 16 divisors (see below), whose sum is σ = 15271144704. Its totient is φ = 9218528352.

The previous prime is 12121323031. The next prime is 12121323037. The reversal of 12121323035 is 53032312121.

It is a cyclic number.

It is not a de Polignac number, because 12121323035 - 2² = 12121323031 is a prime.

It is a super-2 number, since 2×12121323035² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121323035.

It is not an unprimeable number, because it can be changed into a prime (12121323031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304577 + ... + 342066.

It is an arithmetic number, because the mean of its divisors is an integer number (954446544).

Almost surely, 2^12121323035 is an apocalyptic number.

12121323035 is a deficient number, since it is larger than the sum of its proper divisors (3149821669).

12121323035 is a wasteful number, since it uses less digits than its factorization.

12121323035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646834.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 12121323035 its reverse (53032312121), we get a palindrome (65153635156).

The spelling of 12121323035 in words is "twelve billion, one hundred twenty-one million, three hundred twenty-three thousand, thirty-five".