100121210110111 has 2 divisors, whose sum is σ = 100121210110112. Its totient is φ = 100121210110110.

The previous prime is 100121210110099. The next prime is 100121210110127. The reversal of 100121210110111 is 111011012121001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100121210110111 - 2³⁵ = 100086850371743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100121210110091 and 100121210110100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100121210110811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060605055055 + 50060605055056.

It is an arithmetic number, because the mean of its divisors is an integer number (50060605055056).

Almost surely, 2^{100121210110111} is an apocalyptic number.

100121210110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121210110111 is an equidigital number, since it uses as much as digits as its factorization.

100121210110111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 100121210110111 its reverse (111011012121001), we get a palindrome (211132222231112).

The spelling of 100121210110111 in words is "one hundred trillion, one hundred twenty-one billion, two hundred ten million, one hundred ten thousand, one hundred eleven".