12121003012 has 12 divisors (see below), whose sum is σ = 21785046220. Its totient is φ = 5896704096.

The previous prime is 12121002997. The next prime is 12121003039. The reversal of 12121003012 is 21030012121.

It can be written as a sum of positive squares in 2 ways, for example, as 10029221316 + 2091781696 = 100146^2 + 45736^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12121002983 and 12121003001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40949187 + ... + 40949482.

Almost surely, 2^12121003012 is an apocalyptic number.

It is an amenable number.

12121003012 is a deficient number, since it is larger than the sum of its proper divisors (9664043208).

12121003012 is a wasteful number, since it uses less digits than its factorization.

12121003012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81898710 (or 81898708 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12121003012 its reverse (21030012121), we get a palindrome (33151015133).

The spelling of 12121003012 in words is "twelve billion, one hundred twenty-one million, three thousand, twelve".