100002012200921 has 2 divisors, whose sum is σ = 100002012200922. Its totient is φ = 100002012200920.

The previous prime is 100002012200911. The next prime is 100002012201053. The reversal of 100002012200921 is 129002210200001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99426105757696 + 575906443225 = 9971264^2 + 758885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100002012200921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100002012200893 and 100002012200902.

It is not a weakly prime, because it can be changed into another prime (100002012200911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50001006100460 + 50001006100461.

It is an arithmetic number, because the mean of its divisors is an integer number (50001006100461).

Almost surely, 2^{100002012200921} is an apocalyptic number.

It is an amenable number.

100002012200921 is a deficient number, since it is larger than the sum of its proper divisors (1).

100002012200921 is an equidigital number, since it uses as much as digits as its factorization.

100002012200921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 100002012200921 its reverse (129002210200001), we get a palindrome (229004222400922).

The spelling of 100002012200921 in words is "one hundred trillion, two billion, twelve million, two hundred thousand, nine hundred twenty-one".