100121200012000 has 96 divisors (see below), whose sum is σ = 246013729887744. Its totient is φ = 40045884736000.

The previous prime is 100121200011961. The next prime is 100121200012021. The reversal of 100121200012000 is 210002121001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 61520769 + ... + 63127231.

It is an arithmetic number, because the mean of its divisors is an integer number (2562643019664).

Almost surely, 2^{100121200012000} is an apocalyptic number.

100121200012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121200012000 is an abundant number, since it is smaller than the sum of its proper divisors (145892529875744).

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

100121200012000 is a wasteful number, since it uses less digits than its factorization.

100121200012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622069 (or 1622051 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100121200012000 its reverse (210002121001), we get a palindrome (100331202133001).

The spelling of 100121200012000 in words is "one hundred trillion, one hundred twenty-one billion, two hundred million, twelve thousand".