121230212000100 has 144 divisors (see below), whose sum is σ = 401877646601088. Its totient is φ = 27639964661760.

The previous prime is 121230212000083. The next prime is 121230212000141. The reversal of 121230212000100 is 1000212032121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121230212000100.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 71872437 + ... + 73539836.

Almost surely, 2^{121230212000100} is an apocalyptic number.

121230212000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121230212000100 is an abundant number, since it is smaller than the sum of its proper divisors (280647434600988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121230212000100 is a wasteful number, since it uses less digits than its factorization.

121230212000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145412694 (or 145412687 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121230212000100 its reverse (1000212032121), we get a palindrome (122230424032221).

The spelling of 121230212000100 in words is "one hundred twenty-one trillion, two hundred thirty billion, two hundred twelve million, one hundred", and thus it is an aban number.