1021331212012 has 24 divisors (see below), whose sum is σ = 1801020901680. Its totient is φ = 506767141440.

The previous prime is 1021331212007. The next prime is 1021331212021. The reversal of 1021331212012 is 2102121331201.

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, 1359414 + ... + 1972477.

It is an arithmetic number, because the mean of its divisors is an integer number (75042537570).

Almost surely, 2^{1021331212012} is an apocalyptic number.

It is an amenable number.

1021331212012 is a deficient number, since it is larger than the sum of its proper divisors (779689689668).

1021331212012 is a wasteful number, since it uses less digits than its factorization.

1021331212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332481 (or 3332479 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1021331212012 its reverse (2102121331201), we get a palindrome (3123452543213).

The spelling of 1021331212012 in words is "one trillion, twenty-one billion, three hundred thirty-one million, two hundred twelve thousand, twelve".