111020211100121 has 2 divisors, whose sum is σ = 111020211100122. Its totient is φ = 111020211100120.

The previous prime is 111020211100093. The next prime is 111020211100217. The reversal of 111020211100121 is 121001112020111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70461922105600 + 40558288994521 = 8394160^2 + 6368539^2 .

It is a cyclic number.

It is not a de Polignac number, because 111020211100121 - 2³⁸ = 110745333193177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111020211100096 and 111020211100105.

It is not a weakly prime, because it can be changed into another prime (111020211100021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510105550060 + 55510105550061.

It is an arithmetic number, because the mean of its divisors is an integer number (55510105550061).

Almost surely, 2^{111020211100121} is an apocalyptic number.

It is an amenable number.

111020211100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020211100121 is an equidigital number, since it uses as much as digits as its factorization.

111020211100121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111020211100121 its reverse (121001112020111), we get a palindrome (232021323120232).

The spelling of 111020211100121 in words is "one hundred eleven trillion, twenty billion, two hundred eleven million, one hundred thousand, one hundred twenty-one".