100212111685913 has 2 divisors, whose sum is σ = 100212111685914. Its totient is φ = 100212111685912.

The previous prime is 100212111685813. The next prime is 100212111685943. The reversal of 100212111685913 is 319586111212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71892983134729 + 28319128551184 = 8478973^2 + 5321572^2 .

It is a cyclic number.

It is not a de Polignac number, because 100212111685913 - 2²⁴ = 100212094908697 is a prime.

It is not a weakly prime, because it can be changed into another prime (100212111685943) 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, 50106055842956 + 50106055842957.

It is an arithmetic number, because the mean of its divisors is an integer number (50106055842957).

Almost surely, 2^{100212111685913} is an apocalyptic number.

It is an amenable number.

100212111685913 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212111685913 is an equidigital number, since it uses as much as digits as its factorization.

100212111685913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 41.

Adding to 100212111685913 its reverse (319586111212001), we get a palindrome (419798222897914).

The spelling of 100212111685913 in words is "one hundred trillion, two hundred twelve billion, one hundred eleven million, six hundred eighty-five thousand, nine hundred thirteen".