20836221338241 has 27 divisors (see below), whose sum is σ = 30147030398433. Its totient is φ = 13867653084840.

The previous prime is 20836221338239. The next prime is 20836221338279. The reversal of 20836221338241 is 14283312263802.

The square root of 20836221338241 is 4564671.

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

20836221338241 is a `hidden beast` number, since 2 + 0 + 8 + 3 + 6 + 221 + 3 + 382 + 41 = 666.

It is not a de Polignac number, because 20836221338241 - 2¹ = 20836221338239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20836221338221) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13296885840 + ... + 13296887406.

Almost surely, 2^{20836221338241} is an apocalyptic number.

20836221338241 is the 4564671-st square number.

20836221338241 is the 2282336-th centered octagonal number.

It is an amenable number.

20836221338241 is a deficient number, since it is larger than the sum of its proper divisors (9310809060192).

20836221338241 is an frugal number, since it uses more digits than its factorization.

20836221338241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 20836221338241 in words is "twenty trillion, eight hundred thirty-six billion, two hundred twenty-one million, three hundred thirty-eight thousand, two hundred forty-one".