2021868333850 has 24 divisors (see below), whose sum is σ = 3760923652668. Its totient is φ = 808693881600.

The previous prime is 2021868333829. The next prime is 2021868333857. The reversal of 2021868333850 is 583338681202.

It can be written as a sum of positive squares in 6 ways, for example, as 808458134449 + 1213410199401 = 899143^2 + 1101549^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2021868333794 and 2021868333803.

It is not an unprimeable number, because it can be changed into a prime (2021868333857) 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, 567841 + ... + 2089540.

Almost surely, 2^{2021868333850} is an apocalyptic number.

2021868333850 is a deficient number, since it is larger than the sum of its proper divisors (1739055318818).

2021868333850 is a wasteful number, since it uses less digits than its factorization.

2021868333850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672610 (or 2672605 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 2021868333850 in words is "two trillion, twenty-one billion, eight hundred sixty-eight million, three hundred thirty-three thousand, eight hundred fifty".