111101120291101 has 2 divisors, whose sum is σ = 111101120291102. Its totient is φ = 111101120291100.

The previous prime is 111101120291093. The next prime is 111101120291111. The reversal of 111101120291101 is 101192021101111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59259665880900 + 51841454410201 = 7698030^2 + 7200101^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101120291101 - 2³ = 111101120291093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111101120291111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550560145550 + 55550560145551.

It is an arithmetic number, because the mean of its divisors is an integer number (55550560145551).

Almost surely, 2^{111101120291101} is an apocalyptic number.

It is an amenable number.

111101120291101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101120291101 is an equidigital number, since it uses as much as digits as its factorization.

111101120291101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 22.

Adding to 111101120291101 its reverse (101192021101111), we get a palindrome (212293141392212).

The spelling of 111101120291101 in words is "one hundred eleven trillion, one hundred one billion, one hundred twenty million, two hundred ninety-one thousand, one hundred one".