120012120021111 has 16 divisors (see below), whose sum is σ = 160081317341184. Its totient is φ = 79975503224064.

The previous prime is 120012120021109. The next prime is 120012120021139. The reversal of 120012120021111 is 111120021210021.

It is a happy number.

It is not a de Polignac number, because 120012120021111 - 2¹ = 120012120021109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012120021181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279623466 + ... + 280052328.

It is an arithmetic number, because the mean of its divisors is an integer number (10005082333824).

Almost surely, 2^{120012120021111} is an apocalyptic number.

120012120021111 is a deficient number, since it is larger than the sum of its proper divisors (40069197320073).

120012120021111 is a wasteful number, since it uses less digits than its factorization.

120012120021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466630.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120012120021111 its reverse (111120021210021), we get a palindrome (231132141231132).

The spelling of 120012120021111 in words is "one hundred twenty trillion, twelve billion, one hundred twenty million, twenty-one thousand, one hundred eleven".