100220000 has 60 divisors (see below), whose sum is σ = 246605436. Its totient is φ = 40080000.

The previous prime is 100219967. The next prime is 100220009. The reversal of 100220000 is 22001.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17495 + ... + 22505.

Almost surely, 2^100220000 is an apocalyptic number.

100220000 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 100220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123302718).

100220000 is an abundant number, since it is smaller than the sum of its proper divisors (146385436).

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

100220000 is an frugal number, since it uses more digits than its factorization.

100220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041 (or 5018 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 100220000 is about 10010.9939566459. The cubic root of 100220000 is about 464.4990172327.

Adding to 100220000 its reverse (22001), we get a palindrome (100242001).

The spelling of 100220000 in words is "one hundred million, two hundred twenty thousand".