2021371168 has 24 divisors (see below), whose sum is σ = 4034093868. Its totient is φ = 996839424.

The previous prime is 2021371139. The next prime is 2021371201. The reversal of 2021371168 is 8611731202.

It can be written as a sum of positive squares in 2 ways, for example, as 1933536784 + 87834384 = 43972^2 + 9372^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430321 + ... + 434992.

Almost surely, 2^2021371168 is an apocalyptic number.

It is an amenable number.

2021371168 is a deficient number, since it is larger than the sum of its proper divisors (2012722700).

2021371168 is an equidigital number, since it uses as much as digits as its factorization.

2021371168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865396 (or 865388 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2021371168 is about 44959.6615645625. The cubic root of 2021371168 is about 1264.3928237483.

The spelling of 2021371168 in words is "two billion, twenty-one million, three hundred seventy-one thousand, one hundred sixty-eight".