122011122111 has 8 divisors (see below), whose sum is σ = 162702102144. Its totient is φ = 81330445080.

The previous prime is 122011122109. The next prime is 122011122187. The reversal of 122011122111 is 111221110221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122011122111 - 2¹ = 122011122109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011122811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548075 + ... + 2595516.

It is an arithmetic number, because the mean of its divisors is an integer number (20337762768).

Almost surely, 2^122011122111 is an apocalyptic number.

122011122111 is a deficient number, since it is larger than the sum of its proper divisors (40690980033).

122011122111 is an equidigital number, since it uses as much as digits as its factorization.

122011122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151501.

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

Adding to 122011122111 its reverse (111221110221), we get a palindrome (233232232332).

The spelling of 122011122111 in words is "one hundred twenty-two billion, eleven million, one hundred twenty-two thousand, one hundred eleven".