100211212100891 has 2 divisors, whose sum is σ = 100211212100892. Its totient is φ = 100211212100890.

The previous prime is 100211212100861. The next prime is 100211212101053. The reversal of 100211212100891 is 198001212112001.

It is a weak prime.

It is an emirp because it is prime and its reverse (198001212112001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100211212100891 - 2⁴² = 95813165589787 is a prime.

It is not a weakly prime, because it can be changed into another prime (100211212100861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50105606050445 + 50105606050446.

It is an arithmetic number, because the mean of its divisors is an integer number (50105606050446).

Almost surely, 2^{100211212100891} is an apocalyptic number.

100211212100891 is a deficient number, since it is larger than the sum of its proper divisors (1).

100211212100891 is an equidigital number, since it uses as much as digits as its factorization.

100211212100891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 29.

Adding to 100211212100891 its reverse (198001212112001), we get a palindrome (298212424212892).

The spelling of 100211212100891 in words is "one hundred trillion, two hundred eleven billion, two hundred twelve million, one hundred thousand, eight hundred ninety-one".