100212121127 has 2 divisors, whose sum is σ = 100212121128. Its totient is φ = 100212121126.

The previous prime is 100212121117. The next prime is 100212121129. The reversal of 100212121127 is 721121212001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100212121127 - 2⁴ = 100212121111 is a prime.

Together with 100212121129, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212121099 and 100212121108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100212121129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106060563 + 50106060564.

It is an arithmetic number, because the mean of its divisors is an integer number (50106060564).

Almost surely, 2^100212121127 is an apocalyptic number.

100212121127 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212121127 is an equidigital number, since it uses as much as digits as its factorization.

100212121127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 100212121127 its reverse (721121212001), we get a palindrome (821333333128).

The spelling of 100212121127 in words is "one hundred billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twenty-seven".