120111120009 has 24 divisors (see below), whose sum is σ = 174196032192. Its totient is φ = 79750651680.

The previous prime is 120111119971. The next prime is 120111120047. The reversal of 120111120009 is 900021111021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120111119971) and next prime (120111120047).

It is not a de Polignac number, because 120111120009 - 2¹¹ = 120111117961 is a prime.

It is a super-2 number, since 2×120111120009² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120111119973 and 120111120000.

It is not an unprimeable number, because it can be changed into a prime (120111120209) 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 23 ways as a sum of consecutive naturals, for example, 2195739 + ... + 2249775.

It is an arithmetic number, because the mean of its divisors is an integer number (7258168008).

Almost surely, 2^120111120009 is an apocalyptic number.

It is an amenable number.

120111120009 is a deficient number, since it is larger than the sum of its proper divisors (54084912183).

120111120009 is a wasteful number, since it uses less digits than its factorization.

120111120009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55037 (or 55034 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 120111120009 in words is "one hundred twenty billion, one hundred eleven million, one hundred twenty thousand, nine".