1021212130 has 8 divisors (see below), whose sum is σ = 1838181852. Its totient is φ = 408484848.

The previous prime is 1021212113. The next prime is 1021212131. The reversal of 1021212130 is 312121201.

It can be written as a sum of positive squares in 2 ways, for example, as 1018311921 + 2900209 = 31911^2 + 1703^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1021212130.

It is not an unprimeable number, because it can be changed into a prime (1021212131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51060597 + ... + 51060616.

Almost surely, 2^1021212130 is an apocalyptic number.

1021212130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021212130 is a deficient number, since it is larger than the sum of its proper divisors (816969722).

1021212130 is a wasteful number, since it uses less digits than its factorization.

1021212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102121220.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1021212130 is about 31956.4098421584. The cubic root of 1021212130 is about 1007.0212960222.

Adding to 1021212130 its reverse (312121201), we get a palindrome (1333333331).

The spelling of 1021212130 in words is "one billion, twenty-one million, two hundred twelve thousand, one hundred thirty".