120111389 has 2 divisors, whose sum is σ = 120111390. Its totient is φ = 120111388.

The previous prime is 120111377. The next prime is 120111457. The reversal of 120111389 is 983111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108264025 + 11847364 = 10405^2 + 3442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120111389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120111319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60055694 + 60055695.

It is an arithmetic number, because the mean of its divisors is an integer number (60055695).

Almost surely, 2^120111389 is an apocalyptic number.

It is an amenable number.

120111389 is a deficient number, since it is larger than the sum of its proper divisors (1).

120111389 is an equidigital number, since it uses as much as digits as its factorization.

120111389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 120111389 is about 10959.5341598081. The cubic root of 120111389 is about 493.3949837227.

The spelling of 120111389 in words is "one hundred twenty million, one hundred eleven thousand, three hundred eighty-nine".