111211121039 has 2 divisors, whose sum is σ = 111211121040. Its totient is φ = 111211121038.

The previous prime is 111211121009. The next prime is 111211121071. The reversal of 111211121039 is 930121112111.

It is a weak prime.

It is an emirp because it is prime and its reverse (930121112111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111211121039 - 2¹² = 111211116943 is a prime.

It is a super-2 number, since 2×111211121039² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111211121009) 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, 55605560519 + 55605560520.

It is an arithmetic number, because the mean of its divisors is an integer number (55605560520).

Almost surely, 2^111211121039 is an apocalyptic number.

111211121039 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211121039 is an equidigital number, since it uses as much as digits as its factorization.

111211121039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 111211121039 in words is "one hundred eleven billion, two hundred eleven million, one hundred twenty-one thousand, thirty-nine".