1021043012 has 18 divisors (see below), whose sum is σ = 1964032014. Its totient is φ = 464110240.

The previous prime is 1021042999. The next prime is 1021043077. The reversal of 1021043012 is 2103401201.

It can be written as a sum of positive squares in only one way, i.e., 789272836 + 231770176 = 28094^2 + 15224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1054313 + ... + 1055280.

Almost surely, 2^1021043012 is an apocalyptic number.

It is an amenable number.

1021043012 is a deficient number, since it is larger than the sum of its proper divisors (942989002).

1021043012 is a wasteful number, since it uses less digits than its factorization.

1021043012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109619 (or 2109606 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1021043012 is about 31953.7636593876. The cubic root of 1021043012 is about 1006.9657036450.

Adding to 1021043012 its reverse (2103401201), we get a palindrome (3124444213).

The spelling of 1021043012 in words is "one billion, twenty-one million, forty-three thousand, twelve".