122110221111 has 16 divisors (see below), whose sum is σ = 173532572928. Its totient is φ = 76110768000.

The previous prime is 122110221073. The next prime is 122110221119. The reversal of 122110221111 is 111122011221.

It is a happy number.

It is not a de Polignac number, because 122110221111 - 2⁹ = 122110220599 is a prime.

It is a super-4 number, since 4×122110221111⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122110221119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7920505 + ... + 7935906.

It is an arithmetic number, because the mean of its divisors is an integer number (10845785808).

Almost surely, 2^122110221111 is an apocalyptic number.

122110221111 is a deficient number, since it is larger than the sum of its proper divisors (51422351817).

122110221111 is a wasteful number, since it uses less digits than its factorization.

122110221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15856582.

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

Adding to 122110221111 its reverse (111122011221), we get a palindrome (233232232332).

The spelling of 122110221111 in words is "one hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, one hundred eleven".