1021232000 has 128 divisors (see below), whose sum is σ = 2572970400. Its totient is φ = 403046400.

The previous prime is 1021231997. The next prime is 1021232029. The reversal of 1021232000 is 2321201.

It is a happy number.

1021232000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1327616 + ... + 1328384.

Almost surely, 2^1021232000 is an apocalyptic number.

1021232000 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 1021232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286485200).

1021232000 is an abundant number, since it is smaller than the sum of its proper divisors (1551738400).

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

1021232000 is an frugal number, since it uses more digits than its factorization.

1021232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1021232000 is about 31956.7207328912. The cubic root of 1021232000 is about 1007.0278272748.

Adding to 1021232000 its reverse (2321201), we get a palindrome (1023553201).

The spelling of 1021232000 in words is "one billion, twenty-one million, two hundred thirty-two thousand".