1222441100 has 54 divisors (see below), whose sum is σ = 2817983700. Its totient is φ = 460202240.

The previous prime is 1222441097. The next prime is 1222441111. The reversal of 1222441100 is 11442221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7751 + ... + 50049.

Almost surely, 2^1222441100 is an apocalyptic number.

1222441100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222441100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1408991850).

1222441100 is an abundant number, since it is smaller than the sum of its proper divisors (1595542600).

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

1222441100 is a wasteful number, since it uses less digits than its factorization.

1222441100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42347 (or 42323 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1222441100 is about 34963.4251754601. The cubic root of 1222441100 is about 1069.2419296424.

Adding to 1222441100 its reverse (11442221), we get a palindrome (1233883321).

The spelling of 1222441100 in words is "one billion, two hundred twenty-two million, four hundred forty-one thousand, one hundred".