1021313111142 has 16 divisors (see below), whose sum is σ = 2042666120880. Its totient is φ = 340431053952.

The previous prime is 1021313111131. The next prime is 1021313111177. The reversal of 1021313111142 is 2411113131201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1324383 + ... + 1948490.

It is an arithmetic number, because the mean of its divisors is an integer number (127666632555).

Almost surely, 2^{1021313111142} is an apocalyptic number.

1021313111142 is an abundant number, since it is smaller than the sum of its proper divisors (1021353009738).

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

1021313111142 is a wasteful number, since it uses less digits than its factorization.

1021313111142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324887.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 1021313111142 its reverse (2411113131201), we get a palindrome (3432426242343).

The spelling of 1021313111142 in words is "one trillion, twenty-one billion, three hundred thirteen million, one hundred eleven thousand, one hundred forty-two".