2021855894202 has 16 divisors (see below), whose sum is σ = 4043825577792. Its totient is φ = 673932999840.

The previous prime is 2021855894197. The next prime is 2021855894239. The reversal of 2021855894202 is 2024985581202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4509363 + ... + 4937414.

It is an arithmetic number, because the mean of its divisors is an integer number (252739098612).

Almost surely, 2^{2021855894202} is an apocalyptic number.

2021855894202 is an abundant number, since it is smaller than the sum of its proper divisors (2021969683590).

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

2021855894202 is a wasteful number, since it uses less digits than its factorization.

2021855894202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9482453.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 2021855894202 in words is "two trillion, twenty-one billion, eight hundred fifty-five million, eight hundred ninety-four thousand, two hundred two".