1012200000 has 336 divisors, whose sum is σ = 3841504128. Its totient is φ = 230400000.

The previous prime is 1012199999. The next prime is 1012200017. The reversal of 1012200000 is 22101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4199880 + ... + 4200120.

It is an arithmetic number, because the mean of its divisors is an integer number (11433048).

Almost surely, 2^1012200000 is an apocalyptic number.

1012200000 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 1012200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920752064).

1012200000 is an abundant number, since it is smaller than the sum of its proper divisors (2829304128).

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

1012200000 is an frugal number, since it uses more digits than its factorization.

1012200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 258 counting only the distinct ones).

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

The square root of 1012200000 is about 31815.0907589465. The cubic root of 1012200000 is about 1004.0502400747.

Adding to 1012200000 its reverse (22101), we get a palindrome (1012222101).

The spelling of 1012200000 in words is "one billion, twelve million, two hundred thousand".