121212000099 has 32 divisors (see below), whose sum is σ = 182246676480. Its totient is φ = 79606800000.

The previous prime is 121212000097. The next prime is 121212000121. The reversal of 121212000099 is 990000212121.

It is not a de Polignac number, because 121212000099 - 2¹ = 121212000097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121212000097) 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 31 ways as a sum of consecutive naturals, for example, 2461974 + ... + 2510724.

It is an arithmetic number, because the mean of its divisors is an integer number (5695208640).

Almost surely, 2^121212000099 is an apocalyptic number.

121212000099 is a deficient number, since it is larger than the sum of its proper divisors (61034676381).

121212000099 is a wasteful number, since it uses less digits than its factorization.

121212000099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50128 (or 50122 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 121212000099 in words is "one hundred twenty-one billion, two hundred twelve million, ninety-nine", and thus it is an aban number.