100010001221200 has 120 divisors (see below), whose sum is σ = 289051462329920. Its totient is φ = 32484451507200.

The previous prime is 100010001221173. The next prime is 100010001221209. The reversal of 100010001221200 is 2122100010001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100010001221209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939890421 + ... + 939996820.

Almost surely, 2^{100010001221200} is an apocalyptic number.

100010001221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100010001221200 is an abundant number, since it is smaller than the sum of its proper divisors (189041461108720).

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

100010001221200 is a wasteful number, since it uses less digits than its factorization.

100010001221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879887285 (or 1879887274 counting only the distinct ones).

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

Adding to 100010001221200 its reverse (2122100010001), we get a palindrome (102132101231201).

The spelling of 100010001221200 in words is "one hundred trillion, ten billion, one million, two hundred twenty-one thousand, two hundred".