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221240240341 is a prime number
BaseRepresentation
bin1100111000001011110…
…0100010100011010101
3210011001121112200122121
43032002330202203111
512111100000142331
6245345242055541
721661353004651
oct3160274424325
9704047480577
10221240240341
118591139113a
1236a64aaa5b1
1317b2a93a323
14a9cadada61
155b4d028c11
hex3382f228d5

221240240341 has 2 divisors, whose sum is σ = 221240240342. Its totient is φ = 221240240340.

The previous prime is 221240240327. The next prime is 221240240359. The reversal of 221240240341 is 143042042122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193925736900 + 27314503441 = 440370^2 + 165271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-221240240341 is a prime.

It is a super-2 number, since 2×2212402403412 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221240240381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110620120170 + 110620120171.

It is an arithmetic number, because the mean of its divisors is an integer number (110620120171).

Almost surely, 2221240240341 is an apocalyptic number.

It is an amenable number.

221240240341 is a deficient number, since it is larger than the sum of its proper divisors (1).

221240240341 is an equidigital number, since it uses as much as digits as its factorization.

221240240341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 221240240341 its reverse (143042042122), we get a palindrome (364282282463).

The spelling of 221240240341 in words is "two hundred twenty-one billion, two hundred forty million, two hundred forty thousand, three hundred forty-one".