2021202240 has 56 divisors (see below), whose sum is σ = 6417320160. Its totient is φ = 538987008.

The previous prime is 2021202217. The next prime is 2021202251. The reversal of 2021202240 is 422021202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1051750 + ... + 1053669.

Almost surely, 2^2021202240 is an apocalyptic number.

2021202240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021202240 is an abundant number, since it is smaller than the sum of its proper divisors (4396117920).

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

2021202240 is a wasteful number, since it uses less digits than its factorization.

2021202240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105439 (or 2105429 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2021202240 is about 44957.7828634820. The cubic root of 2021202240 is about 1264.3576005782.

Adding to 2021202240 its reverse (422021202), we get a palindrome (2443223442).

The spelling of 2021202240 in words is "two billion, twenty-one million, two hundred two thousand, two hundred forty".