121212006383 has 12 divisors (see below), whose sum is σ = 132058502280. Its totient is φ = 111201551136.

The previous prime is 121212006379. The next prime is 121212006389. The reversal of 121212006383 is 383600212121.

It is a happy number.

It is not a de Polignac number, because 121212006383 - 2² = 121212006379 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212006389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2172548 + ... + 2227641.

It is an arithmetic number, because the mean of its divisors is an integer number (11004875190).

Almost surely, 2^121212006383 is an apocalyptic number.

121212006383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121212006383 is a deficient number, since it is larger than the sum of its proper divisors (10846495897).

121212006383 is a wasteful number, since it uses less digits than its factorization.

121212006383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400378 (or 4400365 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 121212006383 in words is "one hundred twenty-one billion, two hundred twelve million, six thousand, three hundred eighty-three".