120122121111 has 4 divisors (see below), whose sum is σ = 160162828152. Its totient is φ = 80081414072.

The previous prime is 120122121101. The next prime is 120122121113. The reversal of 120122121111 is 111121221021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120122121111 - 2⁶ = 120122121047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120122121113) 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, 20020353516 + ... + 20020353521.

It is an arithmetic number, because the mean of its divisors is an integer number (40040707038).

Almost surely, 2^120122121111 is an apocalyptic number.

120122121111 is a deficient number, since it is larger than the sum of its proper divisors (40040707041).

120122121111 is an equidigital number, since it uses as much as digits as its factorization.

120122121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40040707040.

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

Adding to 120122121111 its reverse (111121221021), we get a palindrome (231243342132).

The spelling of 120122121111 in words is "one hundred twenty billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred eleven".