111121010201 has 2 divisors, whose sum is σ = 111121010202. Its totient is φ = 111121010200.

The previous prime is 111121010191. The next prime is 111121010213. The reversal of 111121010201 is 102010121111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60282034576 + 50838975625 = 245524^2 + 225475^2 .

It is a cyclic number.

It is not a de Polignac number, because 111121010201 - 2³⁰ = 110047268377 is a prime.

It is not a weakly prime, because it can be changed into another prime (111121010291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560505100 + 55560505101.

It is an arithmetic number, because the mean of its divisors is an integer number (55560505101).

Almost surely, 2^111121010201 is an apocalyptic number.

It is an amenable number.

111121010201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121010201 is an equidigital number, since it uses as much as digits as its factorization.

111121010201 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 11.

Adding to 111121010201 its reverse (102010121111), we get a palindrome (213131131312).

The spelling of 111121010201 in words is "one hundred eleven billion, one hundred twenty-one million, ten thousand, two hundred one".