1021002130 has 16 divisors (see below), whose sum is σ = 1901176920. Its totient is φ = 394317952.

The previous prime is 1021002113. The next prime is 1021002179. The reversal of 1021002130 is 312001201.

1021002130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 532547929 + 488454201 = 23077^2 + 22101^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760059 + ... + 1760638.

Almost surely, 2^1021002130 is an apocalyptic number.

1021002130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021002130 is a deficient number, since it is larger than the sum of its proper divisors (880174790).

1021002130 is a wasteful number, since it uses less digits than its factorization.

1021002130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520733.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1021002130 is about 31953.1239474327. The cubic root of 1021002130 is about 1006.9522640149.

Adding to 1021002130 its reverse (312001201), we get a palindrome (1333003331).

The spelling of 1021002130 in words is "one billion, twenty-one million, two thousand, one hundred thirty".