100122211211111 has 2 divisors, whose sum is σ = 100122211211112. Its totient is φ = 100122211211110.

The previous prime is 100122211211039. The next prime is 100122211211173. The reversal of 100122211211111 is 111112112221001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100122211211111 - 2⁴² = 95724164700007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100122211211111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100122211210111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061105605555 + 50061105605556.

It is an arithmetic number, because the mean of its divisors is an integer number (50061105605556).

Almost surely, 2^{100122211211111} is an apocalyptic number.

100122211211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

100122211211111 is an equidigital number, since it uses as much as digits as its factorization.

100122211211111 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 17.

Adding to 100122211211111 its reverse (111112112221001), we get a palindrome (211234323432112).

The spelling of 100122211211111 in words is "one hundred trillion, one hundred twenty-two billion, two hundred eleven million, two hundred eleven thousand, one hundred eleven".