120122021111 has 4 divisors (see below), whose sum is σ = 124264159800. Its totient is φ = 115979882424.

The previous prime is 120122021099. The next prime is 120122021197. The reversal of 120122021111 is 111120221021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111120221021 = 109 ⋅1019451569.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120122021111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120122027111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2071069301 + ... + 2071069358.

It is an arithmetic number, because the mean of its divisors is an integer number (31066039950).

Almost surely, 2^120122021111 is an apocalyptic number.

120122021111 is a deficient number, since it is larger than the sum of its proper divisors (4142138689).

120122021111 is an equidigital number, since it uses as much as digits as its factorization.

120122021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4142138688.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120122021111 its reverse (111120221021), we get a palindrome (231242242132).

The spelling of 120122021111 in words is "one hundred twenty billion, one hundred twenty-two million, twenty-one thousand, one hundred eleven".