1000021130 has 8 divisors (see below), whose sum is σ = 1800038052. Its totient is φ = 400008448.

The previous prime is 1000021097. The next prime is 1000021133. The reversal of 1000021130 is 311200001.

It can be written as a sum of positive squares in 2 ways, for example, as 838044601 + 161976529 = 28949^2 + 12727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1000021133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50001047 + ... + 50001066.

Almost surely, 2^1000021130 is an apocalyptic number.

1000021130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000021130 is a deficient number, since it is larger than the sum of its proper divisors (800016922).

1000021130 is a wasteful number, since it uses less digits than its factorization.

1000021130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100002120.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1000021130 is about 31623.1106945538. The cubic root of 1000021130 is about 1000.0070432837.

Adding to 1000021130 its reverse (311200001), we get a palindrome (1311221131).

The spelling of 1000021130 in words is "one billion, twenty-one thousand, one hundred thirty".