1000220700 has 72 divisors (see below), whose sum is σ = 2899536640. Its totient is φ = 266212800.

The previous prime is 1000220681. The next prime is 1000220719. The reversal of 1000220700 is 70220001.

1000220700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1000220681) and next prime (1000220719).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168381 + ... + 174219.

Almost surely, 2^1000220700 is an apocalyptic number.

1000220700 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 1000220700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449768320).

1000220700 is an abundant number, since it is smaller than the sum of its proper divisors (1899315940).

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

1000220700 is a wasteful number, since it uses less digits than its factorization.

1000220700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427 (or 6420 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 1000220700 is about 31626.2659825658. The cubic root of 1000220700 is about 1000.0735612553.

Adding to 1000220700 its reverse (70220001), we get a palindrome (1070440701).

The spelling of 1000220700 in words is "one billion, two hundred twenty thousand, seven hundred".