1021311421312 has 192 divisors, whose sum is σ = 2522665101600. Its totient is φ = 403276603392.

The previous prime is 1021311421309. The next prime is 1021311421313. The reversal of 1021311421312 is 2131241131201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021311421313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84337114 + ... + 84349222.

Almost surely, 2^{1021311421312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021311421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261332550800).

1021311421312 is an abundant number, since it is smaller than the sum of its proper divisors (1501353680288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021311421312 is a wasteful number, since it uses less digits than its factorization.

1021311421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12713 (or 12688 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1021311421312 its reverse (2131241131201), we get a palindrome (3152552552513).

The spelling of 1021311421312 in words is "one trillion, twenty-one billion, three hundred eleven million, four hundred twenty-one thousand, three hundred twelve".