12121011213 has 8 divisors (see below), whose sum is σ = 16162130688. Its totient is φ = 8080282944.

The previous prime is 12121011173. The next prime is 12121011223. The reversal of 12121011213 is 31211012121.

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

It is not a de Polignac number, because 12121011213 - 2⁹ = 12121010701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12121011192 and 12121011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121011223) 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 7 ways as a sum of consecutive naturals, for example, 15645 + ... + 156482.

It is an arithmetic number, because the mean of its divisors is an integer number (2020266336).

Almost surely, 2^12121011213 is an apocalyptic number.

It is an amenable number.

12121011213 is a deficient number, since it is larger than the sum of its proper divisors (4041119475).

12121011213 is a wasteful number, since it uses less digits than its factorization.

12121011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195603.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12121011213 its reverse (31211012121), we get a palindrome (43332023334).

The spelling of 12121011213 in words is "twelve billion, one hundred twenty-one million, eleven thousand, two hundred thirteen".