1021030043212 has 6 divisors (see below), whose sum is σ = 1786802575628. Its totient is φ = 510515021604.

The previous prime is 1021030043207. The next prime is 1021030043219. The reversal of 1021030043212 is 2123400301201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021030043212.

It is not an unprimeable number, because it can be changed into a prime (1021030043219) 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 as a sum of consecutive naturals, namely, 127628755398 + ... + 127628755405.

Almost surely, 2^{1021030043212} is an apocalyptic number.

It is an amenable number.

1021030043212 is a deficient number, since it is larger than the sum of its proper divisors (765772532416).

1021030043212 is a wasteful number, since it uses less digits than its factorization.

1021030043212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255257510807 (or 255257510805 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1021030043212 its reverse (2123400301201), we get a palindrome (3144430344413).

The spelling of 1021030043212 in words is "one trillion, twenty-one billion, thirty million, forty-three thousand, two hundred twelve".