1021013212412 has 12 divisors (see below), whose sum is σ = 1791228917856. Its totient is φ = 509233521600.

The previous prime is 1021013212409. The next prime is 1021013212421. The reversal of 1021013212412 is 2142123101201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318269348 + ... + 318272555.

It is an arithmetic number, because the mean of its divisors is an integer number (149269076488).

Almost surely, 2^{1021013212412} is an apocalyptic number.

It is an amenable number.

1021013212412 is a deficient number, since it is larger than the sum of its proper divisors (770215705444).

1021013212412 is a wasteful number, since it uses less digits than its factorization.

1021013212412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636542308 (or 636542306 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1021013212412 its reverse (2142123101201), we get a palindrome (3163136313613).

The spelling of 1021013212412 in words is "one trillion, twenty-one billion, thirteen million, two hundred twelve thousand, four hundred twelve".