100002111122121 has 16 divisors (see below), whose sum is σ = 143595216274944. Its totient is φ = 61538714406144.

The previous prime is 100002111122101. The next prime is 100002111122149. The reversal of 100002111122121 is 121221111200001.

It is a happy number.

It is not a de Polignac number, because 100002111122121 - 2⁶ = 100002111122057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100002111122121.

It is not an unprimeable number, because it can be changed into a prime (100002111122101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19471161 + ... + 24065126.

It is an arithmetic number, because the mean of its divisors is an integer number (8974701017184).

Almost surely, 2^{100002111122121} is an apocalyptic number.

It is an amenable number.

100002111122121 is a deficient number, since it is larger than the sum of its proper divisors (43593105152823).

100002111122121 is a wasteful number, since it uses less digits than its factorization.

100002111122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43595200.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100002111122121 its reverse (121221111200001), we get a palindrome (221223222322122).

The spelling of 100002111122121 in words is "one hundred trillion, two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-one".