100002100111002 has 48 divisors (see below), whose sum is σ = 217269178818432. Its totient is φ = 33242045569920.

The previous prime is 100002100110971. The next prime is 100002100111003. The reversal of 100002100111002 is 200111001200001.

It is a happy number.

It is a super-2 number, since 2×100002100111002² (a number of 29 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (100002100111003) 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, 200752002 + ... + 201249522.

It is an arithmetic number, because the mean of its divisors is an integer number (4526441225384).

Almost surely, 2^{100002100111002} is an apocalyptic number.

100002100111002 is an abundant number, since it is smaller than the sum of its proper divisors (117267078707430).

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

100002100111002 is a wasteful number, since it uses less digits than its factorization.

100002100111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528323 (or 528320 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100002100111002 its reverse (200111001200001), we get a palindrome (300113101311003).

The spelling of 100002100111002 in words is "one hundred trillion, two billion, one hundred million, one hundred eleven thousand, two".