122120001111 has 4 divisors (see below), whose sum is σ = 162826668152. Its totient is φ = 81413334072.

The previous prime is 122120001089. The next prime is 122120001131. The reversal of 122120001111 is 111100021221.

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

It is not a de Polignac number, because 122120001111 - 2¹³ = 122119992919 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 (122120001131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20353333516 + ... + 20353333521.

It is an arithmetic number, because the mean of its divisors is an integer number (40706667038).

Almost surely, 2^122120001111 is an apocalyptic number.

122120001111 is a deficient number, since it is larger than the sum of its proper divisors (40706667041).

122120001111 is an equidigital number, since it uses as much as digits as its factorization.

122120001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40706667040.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 122120001111 its reverse (111100021221), we get a palindrome (233220022332).

The spelling of 122120001111 in words is "one hundred twenty-two billion, one hundred twenty million, one thousand, one hundred eleven".