100200121212 has 24 divisors (see below), whose sum is σ = 233867200000. Its totient is φ = 33390480816.

The previous prime is 100200121183. The next prime is 100200121249. The reversal of 100200121212 is 212121002001.

It is a Harshad number since it is a multiple of its sum of digits (12).

100200121212 is a modest number, since divided by 121212 gives 100200 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1151212 + ... + 1235187.

Almost surely, 2^100200121212 is an apocalyptic number.

100200121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100200121212 is an abundant number, since it is smaller than the sum of its proper divisors (133667078788).

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

100200121212 is a wasteful number, since it uses less digits than its factorization.

100200121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389905 (or 2389903 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100200121212 its reverse (212121002001), we get a palindrome (312321123213).

It can be divided in two parts, 1002001 and 21212, that multiplied together give a palindrome (21254445212).

The spelling of 100200121212 in words is "one hundred billion, two hundred million, one hundred twenty-one thousand, two hundred twelve".