1021003012 has 24 divisors (see below), whose sum is σ = 1839774104. Its totient is φ = 495424512.

The previous prime is 1021002953. The next prime is 1021003013. The reversal of 1021003012 is 2103001201.

It can be written as a sum of positive squares in 4 ways, for example, as 183710916 + 837292096 = 13554^2 + 28936^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1021003012.

It is not an unprimeable number, because it can be changed into a prime (1021003013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50068 + ... + 67444.

Almost surely, 2^1021003012 is an apocalyptic number.

It is an amenable number.

1021003012 is a deficient number, since it is larger than the sum of its proper divisors (818771092).

1021003012 is a wasteful number, since it uses less digits than its factorization.

1021003012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17815 (or 17813 counting only the distinct ones).

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

The square root of 1021003012 is about 31953.1377488972. The cubic root of 1021003012 is about 1006.9525539691.

Adding to 1021003012 its reverse (2103001201), we get a palindrome (3124004213).

The spelling of 1021003012 in words is "one billion, twenty-one million, three thousand, twelve".