111011121889949 has 2 divisors, whose sum is σ = 111011121889950. Its totient is φ = 111011121889948.

The previous prime is 111011121889933. The next prime is 111011121889973. The reversal of 111011121889949 is 949988121110111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100799230573924 + 10211891316025 = 10039882^2 + 3195605^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011121889949 - 2⁴ = 111011121889933 is a prime.

It is a super-2 number, since 2×111011121889949² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111011121889894 and 111011121889903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111011121889249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505560944974 + 55505560944975.

It is an arithmetic number, because the mean of its divisors is an integer number (55505560944975).

Almost surely, 2^{111011121889949} is an apocalyptic number.

It is an amenable number.

111011121889949 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011121889949 is an equidigital number, since it uses as much as digits as its factorization.

111011121889949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 56.

The spelling of 111011121889949 in words is "one hundred eleven trillion, eleven billion, one hundred twenty-one million, eight hundred eighty-nine thousand, nine hundred forty-nine".