100211012200021 has 2 divisors, whose sum is σ = 100211012200022. Its totient is φ = 100211012200020.

The previous prime is 100211012200001. The next prime is 100211012200081. The reversal of 100211012200021 is 120002210112001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96564249077521 + 3646763122500 = 9826711^2 + 1909650^2 .

It is a cyclic number.

It is not a de Polignac number, because 100211012200021 - 2²⁹ = 100210475329109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100211012199974 and 100211012200010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100211012200001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50105506100010 + 50105506100011.

It is an arithmetic number, because the mean of its divisors is an integer number (50105506100011).

Almost surely, 2^{100211012200021} is an apocalyptic number.

It is an amenable number.

100211012200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100211012200021 is an equidigital number, since it uses as much as digits as its factorization.

100211012200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100211012200021 its reverse (120002210112001), we get a palindrome (220213222312022).

The spelling of 100211012200021 in words is "one hundred trillion, two hundred eleven billion, twelve million, two hundred thousand, twenty-one".