1021230000 has 300 divisors, whose sum is σ = 4084105168. Its totient is φ = 233280000.

The previous prime is 1021229999. The next prime is 1021230017. The reversal of 1021230000 is 321201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (9).

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 (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 629190 + ... + 630810.

Almost surely, 2^1021230000 is an apocalyptic number.

1021230000 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 1021230000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2042052584).

1021230000 is an abundant number, since it is smaller than the sum of its proper divisors (3062875168).

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

1021230000 is a wasteful number, since it uses less digits than its factorization.

1021230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1021230000 is about 31956.6894405538. The cubic root of 1021230000 is about 1007.0271698803.

Adding to 1021230000 its reverse (321201), we get a palindrome (1021551201).

The spelling of 1021230000 in words is "one billion, twenty-one million, two hundred thirty thousand".