121212110012012 has 48 divisors (see below), whose sum is σ = 213518391690240. Its totient is φ = 60207300014400.

The previous prime is 121212110011997. The next prime is 121212110012027. The reversal of 121212110012012 is 210210011212121.

It is an interprime number because it is at equal distance from previous prime (121212110011997) and next prime (121212110012027).

It is a super-2 number, since 2×121212110012012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11316595337 + ... + 11316606047.

It is an arithmetic number, because the mean of its divisors is an integer number (4448299826880).

Almost surely, 2^{121212110012012} is an apocalyptic number.

It is an amenable number.

121212110012012 is a deficient number, since it is larger than the sum of its proper divisors (92306281678228).

121212110012012 is a wasteful number, since it uses less digits than its factorization.

121212110012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19382 (or 19380 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121212110012012 its reverse (210210011212121), we get a palindrome (331422121224133).

The spelling of 121212110012012 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred ten million, twelve thousand, twelve".