12121011219 has 8 divisors (see below), whose sum is σ = 16187975680. Its totient is φ = 8067360456.

The previous prime is 12121011173. The next prime is 12121011223. The reversal of 12121011219 is 91211012121.

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

It is not a de Polignac number, because 12121011219 - 2⁸ = 12121010963 is a prime.

It is a super-2 number, since 2×12121011219² (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 = 12121011195 and 12121011204.

It is not an unprimeable number, because it can be changed into a prime (12121011229) 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, 3326299 + ... + 3329940.

It is an arithmetic number, because the mean of its divisors is an integer number (2023496960).

Almost surely, 2^12121011219 is an apocalyptic number.

12121011219 is a deficient number, since it is larger than the sum of its proper divisors (4066964461).

12121011219 is an equidigital number, since it uses as much as digits as its factorization.

12121011219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656849.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 12121011219 in words is "twelve billion, one hundred twenty-one million, eleven thousand, two hundred nineteen".