120402121111 has 2 divisors, whose sum is σ = 120402121112. Its totient is φ = 120402121110.

The previous prime is 120402121057. The next prime is 120402121187. The reversal of 120402121111 is 111121204021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120402121111 - 2²¹ = 120400023959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120402125111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60201060555 + 60201060556.

It is an arithmetic number, because the mean of its divisors is an integer number (60201060556).

Almost surely, 2^120402121111 is an apocalyptic number.

120402121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

120402121111 is an equidigital number, since it uses as much as digits as its factorization.

120402121111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120402121111 its reverse (111121204021), we get a palindrome (231523325132).

The spelling of 120402121111 in words is "one hundred twenty billion, four hundred two million, one hundred twenty-one thousand, one hundred eleven".