120020010111 has 6 divisors (see below), whose sum is σ = 173362236840. Its totient is φ = 80013340068.

The previous prime is 120020010053. The next prime is 120020010119. The reversal of 120020010111 is 111010020021.

It is a happy number.

It is not a de Polignac number, because 120020010111 - 2²⁶ = 119952901247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 13335556679 = 120020010111 / (1 + 2 + 0 + 0 + 2 + 0 + 0 + 1 + 0 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 120020010093 and 120020010102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120020010119) 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 in 5 ways as a sum of consecutive naturals, for example, 6667778331 + ... + 6667778348.

It is an arithmetic number, because the mean of its divisors is an integer number (28893706140).

Almost surely, 2^120020010111 is an apocalyptic number.

120020010111 is a deficient number, since it is larger than the sum of its proper divisors (53342226729).

120020010111 is a wasteful number, since it uses less digits than its factorization.

120020010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13335556685 (or 13335556682 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120020010111 its reverse (111010020021), we get a palindrome (231030030132).

The spelling of 120020010111 in words is "one hundred twenty billion, twenty million, ten thousand, one hundred eleven".