122122212011 has 16 divisors (see below), whose sum is σ = 126892949760. Its totient is φ = 117389801760.

The previous prime is 122122211899. The next prime is 122122212029. The reversal of 122122212011 is 110212221221.

It is a cyclic number.

It is not a de Polignac number, because 122122212011 - 2¹⁸ = 122121949867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122122212071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7123496 + ... + 7140618.

It is an arithmetic number, because the mean of its divisors is an integer number (7930809360).

Almost surely, 2^122122212011 is an apocalyptic number.

122122212011 is a deficient number, since it is larger than the sum of its proper divisors (4770737749).

122122212011 is a wasteful number, since it uses less digits than its factorization.

122122212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18226.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122122212011 its reverse (110212221221), we get a palindrome (232334433232).

The spelling of 122122212011 in words is "one hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, eleven".