122111111012 has 48 divisors (see below), whose sum is σ = 237020913024.
Its totient is φ = 54577152000.
The previous prime is 122111111011. The next prime is 122111111047. The reversal of 122111111012 is 210111111221.
Adding to 122111111012 its reverse (210111111221), we get a palindrome (332222222233).
It is a super-2 number, since 2×1221111110122 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (122111111011) 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, 11350628 + ... + 11361380.
It is an arithmetic number, because the mean of its divisors is an integer number (4937935688).
Almost surely, 2122111111012 is an apocalyptic number.
It is an amenable number.
122111111012 is a deficient number, since it is larger than the sum of its proper divisors (114909802012).
122111111012 is a wasteful number, since it uses less digits than its factorization.
122111111012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15060 (or 15058 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 14.
The spelling of 122111111012 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, twelve".