1000012200 has 96 divisors (see below), whose sum is σ = 3381881760. Its totient is φ = 242425600.

The previous prime is 1000012187. The next prime is 1000012217. The reversal of 1000012200 is 22100001.

It is a happy number.

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69159 + ... + 82358.

It is an arithmetic number, because the mean of its divisors is an integer number (35227935).

Almost surely, 2^1000012200 is an apocalyptic number.

1000012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000012200 is an abundant number, since it is smaller than the sum of its proper divisors (2381869560).

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

1000012200 is a wasteful number, since it uses less digits than its factorization.

1000012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151547 (or 151538 counting only the distinct ones).

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

The square root of 1000012200 is about 31622.9695000327. The cubic root of 1000012200 is about 1000.0040666501.

Adding to 1000012200 its reverse (22100001), we get a palindrome (1022112201).

It can be divided in two parts, 100001 and 2200, that added together give a palindrome (102201).

The spelling of 1000012200 in words is "one billion, twelve thousand, two hundred".