111122111001101 has 2 divisors, whose sum is σ = 111122111001102. Its totient is φ = 111122111001100.

The previous prime is 111122111001091. The next prime is 111122111001113. The reversal of 111122111001101 is 101100111221111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65100676113001 + 46021434888100 = 8068499^2 + 6783910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122111001101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111122111001701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561055500550 + 55561055500551.

It is an arithmetic number, because the mean of its divisors is an integer number (55561055500551).

Almost surely, 2^{111122111001101} is an apocalyptic number.

It is an amenable number.

111122111001101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122111001101 is an equidigital number, since it uses as much as digits as its factorization.

111122111001101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111122111001101 its reverse (101100111221111), we get a palindrome (212222222222212).

The spelling of 111122111001101 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred eleven million, one thousand, one hundred one".