122221100111 has 8 divisors (see below), whose sum is σ = 133381323648. Its totient is φ = 111069079000.

The previous prime is 122221100093. The next prime is 122221100137. The reversal of 122221100111 is 111001122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122221100111 - 2¹⁰ = 122221099087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221100161) 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 7 ways as a sum of consecutive naturals, for example, 2019425 + ... + 2079066.

It is an arithmetic number, because the mean of its divisors is an integer number (16672665456).

Almost surely, 2^122221100111 is an apocalyptic number.

122221100111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122221100111 is a deficient number, since it is larger than the sum of its proper divisors (11160223537).

122221100111 is a wasteful number, since it uses less digits than its factorization.

122221100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101213.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122221100111 its reverse (111001122221), we get a palindrome (233222222332).

The spelling of 122221100111 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, one hundred eleven".