120220021111 has 2 divisors, whose sum is σ = 120220021112. Its totient is φ = 120220021110.

The previous prime is 120220021073. The next prime is 120220021123. The reversal of 120220021111 is 111120022021.

It is a strong prime.

It is an emirp because it is prime and its reverse (111120022021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120220021111 - 2¹¹ = 120220019063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120220021091 and 120220021100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120220021151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110010555 + 60110010556.

It is an arithmetic number, because the mean of its divisors is an integer number (60110010556).

Almost surely, 2^120220021111 is an apocalyptic number.

120220021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220021111 is an equidigital number, since it uses as much as digits as its factorization.

120220021111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120220021111 its reverse (111120022021), we get a palindrome (231340043132).

The spelling of 120220021111 in words is "one hundred twenty billion, two hundred twenty million, twenty-one thousand, one hundred eleven".