1021123130 has 16 divisors (see below), whose sum is σ = 1856221704. Its totient is φ = 404404800.

The previous prime is 1021123127. The next prime is 1021123189. The reversal of 1021123130 is 313211201.

It can be written as a sum of positive squares in 4 ways, for example, as 1016908321 + 4214809 = 31889^2 + 2053^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504497 + ... + 506516.

Almost surely, 2^1021123130 is an apocalyptic number.

1021123130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021123130 is a deficient number, since it is larger than the sum of its proper divisors (835098574).

1021123130 is a wasteful number, since it uses less digits than its factorization.

1021123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011121.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1021123130 is about 31955.0172899343. The cubic root of 1021123130 is about 1006.9920407556.

Adding to 1021123130 its reverse (313211201), we get a palindrome (1334334331).

The spelling of 1021123130 in words is "one billion, twenty-one million, one hundred twenty-three thousand, one hundred thirty".