100202121200 has 30 divisors (see below), whose sum is σ = 240735597144. Its totient is φ = 40080848320.

The previous prime is 100202121197. The next prime is 100202121209. The reversal of 100202121200 is 2121202001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202121209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125252252 + ... + 125253051.

Almost surely, 2^100202121200 is an apocalyptic number.

100202121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100202121200 is an abundant number, since it is smaller than the sum of its proper divisors (140533475944).

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

100202121200 is a wasteful number, since it uses less digits than its factorization.

100202121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250505321 (or 250505310 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100202121200 its reverse (2121202001), we get a palindrome (102323323201).

The spelling of 100202121200 in words is "one hundred billion, two hundred two million, one hundred twenty-one thousand, two hundred".