2021167140 has 96 divisors (see below), whose sum is σ = 5868785664. Its totient is φ = 519185280.

The previous prime is 2021167129. The next prime is 2021167193. The reversal of 2021167140 is 417611202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021167140.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419827 + ... + 424613.

It is an arithmetic number, because the mean of its divisors is an integer number (61133184).

Almost surely, 2^2021167140 is an apocalyptic number.

2021167140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021167140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2934392832).

2021167140 is an abundant number, since it is smaller than the sum of its proper divisors (3847618524).

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

2021167140 is a wasteful number, since it uses less digits than its factorization.

2021167140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057 (or 5055 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 2021167140 is about 44957.3924955618. The cubic root of 2021167140 is about 1264.3502816325.

Adding to 2021167140 its reverse (417611202), we get a palindrome (2438778342).

The spelling of 2021167140 in words is "two billion, twenty-one million, one hundred sixty-seven thousand, one hundred forty".