1000100220 has 48 divisors (see below), whose sum is σ = 3200322048. Its totient is φ = 228594240.

The previous prime is 1000100201. The next prime is 1000100239. The reversal of 1000100220 is 220010001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1000100201) and next prime (1000100239).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1000100199 and 1000100208.

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 15 ways as a sum of consecutive naturals, for example, 1190176 + ... + 1191015.

It is an arithmetic number, because the mean of its divisors is an integer number (66673376).

Almost surely, 2^1000100220 is an apocalyptic number.

1000100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000100220 is an abundant number, since it is smaller than the sum of its proper divisors (2200221828).

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

1000100220 is a wasteful number, since it uses less digits than its factorization.

1000100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381210 (or 2381208 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1000100220 is about 31624.3611793187. The cubic root of 1000100220 is about 1000.0334055507.

Adding to 1000100220 its reverse (220010001), we get a palindrome (1220110221).

The spelling of 1000100220 in words is "one billion, one hundred thousand, two hundred twenty".