111121120019 has 16 divisors (see below), whose sum is σ = 143962586880. Its totient is φ = 83292636960.

The previous prime is 111121120001. The next prime is 111121120051. The reversal of 111121120019 is 910021121111.

It is not a de Polignac number, because 111121120019 - 2¹² = 111121115923 is a prime.

It is a super-2 number, since 2×111121120019² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111121120519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32132777 + ... + 32136234.

It is an arithmetic number, because the mean of its divisors is an integer number (8997661680).

Almost surely, 2^111121120019 is an apocalyptic number.

111121120019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

111121120019 is a deficient number, since it is larger than the sum of its proper divisors (32841466861).

111121120019 is a wasteful number, since it uses less digits than its factorization.

111121120019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64269050.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 111121120019 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred twenty thousand, nineteen".