1000021131330 has 128 divisors (see below), whose sum is σ = 2595139223040. Its totient is φ = 245163356160.

The previous prime is 1000021131269. The next prime is 1000021131353. The reversal of 1000021131330 is 331311200001.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 188360716 + ... + 188366024.

It is an arithmetic number, because the mean of its divisors is an integer number (20274525180).

Almost surely, 2^{1000021131330} is an apocalyptic number.

1000021131330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000021131330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1297569611520).

1000021131330 is an abundant number, since it is smaller than the sum of its proper divisors (1595118091710).

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

1000021131330 is a wasteful number, since it uses less digits than its factorization.

1000021131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 1000021131330 its reverse (331311200001), we get a palindrome (1331332331331).

The spelling of 1000021131330 in words is "one trillion, twenty-one million, one hundred thirty-one thousand, three hundred thirty".