2120821340416 has 27 divisors (see below), whose sum is σ = 4233404733691. Its totient is φ = 1060399019776.

The previous prime is 2120821340413. The next prime is 2120821340441. The reversal of 2120821340416 is 6140431280212.

The square root of 2120821340416 is 1456304.

It is a perfect power (a square), and thus also a powerful number.

It is a super-3 number, since 3×2120821340416³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120821340413) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23255355 + ... + 23346373.

Almost surely, 2^{2120821340416} is an apocalyptic number.

2120821340416 is the 1456304-th square number.

It is an amenable number.

2120821340416 is a deficient number, since it is larger than the sum of its proper divisors (2112583393275).

2120821340416 is an frugal number, since it uses more digits than its factorization.

2120821340416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182054 (or 91021 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 2120821340416 in words is "two trillion, one hundred twenty billion, eight hundred twenty-one million, three hundred forty thousand, four hundred sixteen".