122111101010 has 64 divisors (see below), whose sum is σ = 224651411712. Its totient is φ = 47779946496.

The previous prime is 122111100989. The next prime is 122111101037. The reversal of 122111101010 is 10101111221.

It is a super-2 number, since 2×122111101010² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122111100982 and 122111101000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78628394 + ... + 78629946.

It is an arithmetic number, because the mean of its divisors is an integer number (3510178308).

Almost surely, 2^122111101010 is an apocalyptic number.

122111101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122111101010 is a deficient number, since it is larger than the sum of its proper divisors (102540310702).

122111101010 is a wasteful number, since it uses less digits than its factorization.

122111101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 122111101010 its reverse (10101111221), we get a palindrome (132212212231).

The spelling of 122111101010 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred one thousand, ten".