2021126361 has 8 divisors (see below), whose sum is σ = 2740510560. Its totient is φ = 1324579872.

The previous prime is 2021126353. The next prime is 2021126407. The reversal of 2021126361 is 1636211202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2021126361 - 2³ = 2021126353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021126761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5709220 + ... + 5709573.

It is an arithmetic number, because the mean of its divisors is an integer number (342563820).

Almost surely, 2^2021126361 is an apocalyptic number.

It is an amenable number.

2021126361 is a deficient number, since it is larger than the sum of its proper divisors (719384199).

2021126361 is a wasteful number, since it uses less digits than its factorization.

2021126361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11418855.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2021126361 is about 44956.9389638574. The cubic root of 2021126361 is about 1264.3417784124.

Adding to 2021126361 its reverse (1636211202), we get a palindrome (3657337563).

The spelling of 2021126361 in words is "two billion, twenty-one million, one hundred twenty-six thousand, three hundred sixty-one".