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121121200231241 = 727013526192909
BaseRepresentation
bin11011100010100010111010…
…000111010101001101001001
3120212212001222200211010122212
4123202202322013111031021
5111333422204224344431
61105334151120554505
734340501152666100
oct3342427207251511
9525761880733585
10121121200231241
11356582379a8771
1211702124a82a35
1352778ac455372
1421ca423dad037
15e0099140672b
hex6e28ba1d5349

121121200231241 has 12 divisors (see below), whose sum is σ = 141097083100740. Its totient is φ = 103670071495200.

The previous prime is 121121200231183. The next prime is 121121200231337. The reversal of 121121200231241 is 142132002121121.

It can be written as a sum of positive squares in 2 ways, for example, as 112325467853641 + 8795732377600 = 10598371^2 + 2965760^2 .

It is not a de Polignac number, because 121121200231241 - 246 = 50752456053577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121200231841) 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 11 ways as a sum of consecutive naturals, for example, 1763062106 + ... + 1763130803.

It is an arithmetic number, because the mean of its divisors is an integer number (11758090258395).

Almost surely, 2121121200231241 is an apocalyptic number.

It is an amenable number.

121121200231241 is a deficient number, since it is larger than the sum of its proper divisors (19975882869499).

121121200231241 is an equidigital number, since it uses as much as digits as its factorization.

121121200231241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526193624 (or 3526193617 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 121121200231241 its reverse (142132002121121), we get a palindrome (263253202352362).

The spelling of 121121200231241 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred million, two hundred thirty-one thousand, two hundred forty-one".

Divisors: 1 7 49 701 4907 34349 3526192909 24683350363 172783452541 2471861229209 17303028604463 121121200231241