2021021303142 has 16 divisors (see below), whose sum is σ = 4042062547632. Its totient is φ = 673670444160.

The previous prime is 2021021303141. The next prime is 2021021303159. The reversal of 2021021303142 is 2413031201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021021303141) by changing a digit.

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, 705042 + ... + 2130522.

It is an arithmetic number, because the mean of its divisors is an integer number (252628909227).

Almost surely, 2^{2021021303142} is an apocalyptic number.

2021021303142 is an abundant number, since it is smaller than the sum of its proper divisors (2021041244490).

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

2021021303142 is a wasteful number, since it uses less digits than its factorization.

2021021303142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661783.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2021021303142 its reverse (2413031201202), we get a palindrome (4434052504344).

The spelling of 2021021303142 in words is "two trillion, twenty-one billion, twenty-one million, three hundred three thousand, one hundred forty-two".