100021210200 has 144 divisors (see below), whose sum is σ = 355663765080. Its totient is φ = 25103354880.

The previous prime is 100021210171. The next prime is 100021210207. The reversal of 100021210200 is 2012120001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021210207) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1603734 + ... + 1664933.

Almost surely, 2^100021210200 is an apocalyptic number.

100021210200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021210200 is an abundant number, since it is smaller than the sum of its proper divisors (255642554880).

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

100021210200 is a wasteful number, since it uses less digits than its factorization.

100021210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268706 (or 3268694 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100021210200 its reverse (2012120001), we get a palindrome (102033330201).

The spelling of 100021210200 in words is "one hundred billion, twenty-one million, two hundred ten thousand, two hundred".