100212221021202 has 20 divisors (see below), whose sum is σ = 224549606362686. Its totient is φ = 33404073673680.

The previous prime is 100212221021201. The next prime is 100212221021239. The reversal of 100212221021202 is 202120122212001.

It is a happy number.

100212221021202 is a `hidden beast` number, since 10 + 0 + 212 + 221 + 0 + 21 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99485483526081 + 726737495121 = 9974241^2 + 852489^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (100212221021201) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 309296978299 + ... + 309296978622.

Almost surely, 2^{100212221021202} is an apocalyptic number.

100212221021202 is an abundant number, since it is smaller than the sum of its proper divisors (124337385341484).

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

100212221021202 is an equidigital number, since it uses as much as digits as its factorization.

100212221021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618593956935 (or 618593956926 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100212221021202 its reverse (202120122212001), we get a palindrome (302332343233203).

The spelling of 100212221021202 in words is "one hundred trillion, two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, two hundred two".