1000122900 has 72 divisors (see below), whose sum is σ = 3307080000. Its totient is φ = 228599040.

The previous prime is 1000122889. The next prime is 1000122911. The reversal of 1000122900 is 92210001.

It is a happy number.

1000122900 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 (1000122889) and next prime (1000122911).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1000122900.

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, 236025 + ... + 240224.

Almost surely, 2^1000122900 is an apocalyptic number.

1000122900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000122900 is an abundant number, since it is smaller than the sum of its proper divisors (2306957100).

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

1000122900 is a wasteful number, since it uses less digits than its factorization.

1000122900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476273 (or 476266 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1000122900 is about 31624.7197616042. The cubic root of 1000122900 is about 1000.0409649885.

Adding to 1000122900 its reverse (92210001), we get a palindrome (1092332901).

The spelling of 1000122900 in words is "one billion, one hundred twenty-two thousand, nine hundred".