122221011100 has 72 divisors (see below), whose sum is σ = 265985007120. Its totient is φ = 48747578880.

The previous prime is 122221011079. The next prime is 122221011139. The reversal of 122221011100 is 1110122221.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 81861954 + ... + 81863446.

It is an arithmetic number, because the mean of its divisors is an integer number (3694236210).

Almost surely, 2^122221011100 is an apocalyptic number.

122221011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221011100 is an abundant number, since it is smaller than the sum of its proper divisors (143763996020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122221011100 is a wasteful number, since it uses less digits than its factorization.

122221011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319 (or 3312 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122221011100 its reverse (1110122221), we get a palindrome (123331133321).

The spelling of 122221011100 in words is "one hundred twenty-two billion, two hundred twenty-one million, eleven thousand, one hundred".