122210100 has 72 divisors (see below), whose sum is σ = 392891520. Its totient is φ = 32588640.

The previous prime is 122210047. The next prime is 122210111. The reversal of 122210100 is 1012221.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19932 + ... + 25331.

Almost surely, 2^122210100 is an apocalyptic number.

122210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122210100 is an abundant number, since it is smaller than the sum of its proper divisors (270681420).

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

122210100 is a wasteful number, since it uses less digits than its factorization.

122210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45286 (or 45273 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 122210100 is about 11054.8677061284. The cubic root of 122210100 is about 496.2521101709.

Adding to 122210100 its reverse (1012221), we get a palindrome (123222321).

The spelling of 122210100 in words is "one hundred twenty-two million, two hundred ten thousand, one hundred".