111210121142201 has 2 divisors, whose sum is σ = 111210121142202. Its totient is φ = 111210121142200.

The previous prime is 111210121142143. The next prime is 111210121142213. The reversal of 111210121142201 is 102241121012111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97187163306025 + 14022957836176 = 9858355^2 + 3744724^2 .

It is a cyclic number.

It is not a de Polignac number, because 111210121142201 - 2⁶ = 111210121142137 is a prime.

It is not a weakly prime, because it can be changed into another prime (111210121142251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605060571100 + 55605060571101.

It is an arithmetic number, because the mean of its divisors is an integer number (55605060571101).

Almost surely, 2^{111210121142201} is an apocalyptic number.

It is an amenable number.

111210121142201 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210121142201 is an equidigital number, since it uses as much as digits as its factorization.

111210121142201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111210121142201 its reverse (102241121012111), we get a palindrome (213451242154312).

The spelling of 111210121142201 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twenty-one million, one hundred forty-two thousand, two hundred one".