10000121200 has 30 divisors (see below), whose sum is σ = 24025292144. Its totient is φ = 4000048320.

The previous prime is 10000121149. The next prime is 10000121203. The reversal of 10000121200 is 212100001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000121203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12499752 + ... + 12500551.

Almost surely, 2^10000121200 is an apocalyptic number.

10000121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10000121200 is an abundant number, since it is smaller than the sum of its proper divisors (14025170944).

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

10000121200 is a wasteful number, since it uses less digits than its factorization.

10000121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000321 (or 25000310 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10000121200 its reverse (212100001), we get a palindrome (10212221201).

The spelling of 10000121200 in words is "ten billion, one hundred twenty-one thousand, two hundred".