1021313021112 has 48 divisors (see below), whose sum is σ = 2928765284640. Its totient is φ = 320411927808.

The previous prime is 1021313021021. The next prime is 1021313021117. The reversal of 1021313021112 is 2111203131201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021313021117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417201808 + ... + 417204255.

It is an arithmetic number, because the mean of its divisors is an integer number (61015943430).

Almost surely, 2^{1021313021112} is an apocalyptic number.

1021313021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021313021112 is an abundant number, since it is smaller than the sum of its proper divisors (1907452263528).

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

1021313021112 is a wasteful number, since it uses less digits than its factorization.

1021313021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834406092 (or 834406085 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1021313021112 its reverse (2111203131201), we get a palindrome (3132516152313).

The spelling of 1021313021112 in words is "one trillion, twenty-one billion, three hundred thirteen million, twenty-one thousand, one hundred twelve".