100212112020121 has 2 divisors, whose sum is σ = 100212112020122. Its totient is φ = 100212112020120.

The previous prime is 100212112020089. The next prime is 100212112020217. The reversal of 100212112020121 is 121020211212001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78233830410121 + 21978281610000 = 8844989^2 + 4688100^2 .

It is a cyclic number.

It is not a de Polignac number, because 100212112020121 - 2⁵ = 100212112020089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212112020095 and 100212112020104.

It is not a weakly prime, because it can be changed into another prime (100212112020221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106056010060 + 50106056010061.

It is an arithmetic number, because the mean of its divisors is an integer number (50106056010061).

Almost surely, 2^{100212112020121} is an apocalyptic number.

It is an amenable number.

100212112020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212112020121 is an equidigital number, since it uses as much as digits as its factorization.

100212112020121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100212112020121 its reverse (121020211212001), we get a palindrome (221232323232122).

The spelling of 100212112020121 in words is "one hundred trillion, two hundred twelve billion, one hundred twelve million, twenty thousand, one hundred twenty-one".