2212621740 has 288 divisors, whose sum is σ = 8279107200. Its totient is φ = 466771968.

The previous prime is 2212621739. The next prime is 2212621753. The reversal of 2212621740 is 471262122.

2212621740 is a `hidden beast` number, since 22 + 12 + 621 + 7 + 4 + 0 = 666.

It is a super-3 number, since 3×2212621740³ (a number of 29 digits) contains 333 as substring.

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 95 ways as a sum of consecutive naturals, for example, 1134286 + ... + 1136234.

It is an arithmetic number, because the mean of its divisors is an integer number (28746900).

Almost surely, 2^2212621740 is an apocalyptic number.

2212621740 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 2212621740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4139553600).

2212621740 is an abundant number, since it is smaller than the sum of its proper divisors (6066485460).

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

2212621740 is a wasteful number, since it uses less digits than its factorization.

2212621740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2212621740 is about 47038.5133693657. The cubic root of 2212621740 is about 1303.0739367876.

Adding to 2212621740 its reverse (471262122), we get a palindrome (2683883862).

The spelling of 2212621740 in words is "two billion, two hundred twelve million, six hundred twenty-one thousand, seven hundred forty".