1200120020111 has 16 divisors (see below), whose sum is σ = 1227833800704. Its totient is φ = 1172498658144.

The previous prime is 1200120020093. The next prime is 1200120020119. The reversal of 1200120020111 is 1110200210021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200120020111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200120020092 and 1200120020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120020119) 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, 82514906 + ... + 82529448.

It is an arithmetic number, because the mean of its divisors is an integer number (76739612544).

Almost surely, 2^{1200120020111} is an apocalyptic number.

1200120020111 is a deficient number, since it is larger than the sum of its proper divisors (27713780593).

1200120020111 is a wasteful number, since it uses less digits than its factorization.

1200120020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17590.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200120020111 its reverse (1110200210021), we get a palindrome (2310320230132).

The spelling of 1200120020111 in words is "one trillion, two hundred billion, one hundred twenty million, twenty thousand, one hundred eleven".