122121122011 has 16 divisors (see below), whose sum is σ = 140182538688. Its totient is φ = 104214528000.

The previous prime is 122121122009. The next prime is 122121122033. The reversal of 122121122011 is 110221121221.

It is a cyclic number.

It is not a de Polignac number, because 122121122011 - 2¹ = 122121122009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122121122051) 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 15 ways as a sum of consecutive naturals, for example, 1545361 + ... + 1622461.

It is an arithmetic number, because the mean of its divisors is an integer number (8761408668).

Almost surely, 2^122121122011 is an apocalyptic number.

122121122011 is a deficient number, since it is larger than the sum of its proper divisors (18061416677).

122121122011 is an equidigital number, since it uses as much as digits as its factorization.

122121122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78102.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122121122011 its reverse (110221121221), we get a palindrome (232342243232).

The spelling of 122121122011 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, eleven".