111101111009969 has 2 divisors, whose sum is σ = 111101111009970. Its totient is φ = 111101111009968.

The previous prime is 111101111009923. The next prime is 111101111009971. The reversal of 111101111009969 is 969900111101111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90702004537600 + 20399106472369 = 9523760^2 + 4516537^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101111009969 - 2¹² = 111101111005873 is a prime.

It is a super-2 number, since 2×111101111009969² (a number of 29 digits) contains 22 as substring.

Together with 111101111009971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111101111009569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550555504984 + 55550555504985.

It is an arithmetic number, because the mean of its divisors is an integer number (55550555504985).

Almost surely, 2^{111101111009969} is an apocalyptic number.

It is an amenable number.

111101111009969 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101111009969 is an equidigital number, since it uses as much as digits as its factorization.

111101111009969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 41.

The spelling of 111101111009969 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, nine thousand, nine hundred sixty-nine".