220365241261 has 6 divisors (see below), whose sum is σ = 242219645486. Its totient is φ = 200332037400.

The previous prime is 220365241259. The next prime is 220365241319. The reversal of 220365241261 is 162142563022.

It can be written as a sum of positive squares in only one way, i.e., 155546627236 + 64818614025 = 394394^2 + 254595^2 .

It is not a de Polignac number, because 220365241261 - 2¹ = 220365241259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220365241861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 910600050 + ... + 910600291.

Almost surely, 2^220365241261 is an apocalyptic number.

It is an amenable number.

220365241261 is a deficient number, since it is larger than the sum of its proper divisors (21854404225).

220365241261 is a wasteful number, since it uses less digits than its factorization.

220365241261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821200363 (or 1821200352 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 220365241261 in words is "two hundred twenty billion, three hundred sixty-five million, two hundred forty-one thousand, two hundred sixty-one".