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10200201221 = 72320362801
BaseRepresentation
bin10010111111111101…
…01011100000000101
3222022212110220120102
421133332223200011
5131342222414341
64404053413445
7510525164660
oct113776534005
928285426512
1010200201221
114364825171
121b8803a285
13c67315232
146ca9986d7
153ea756c9b
hex25ffab805

10200201221 has 8 divisors (see below), whose sum is σ = 11658060864. Its totient is φ = 8742513600.

The previous prime is 10200201217. The next prime is 10200201223. The reversal of 10200201221 is 12210200201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10200201221 - 22 = 10200201217 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 (10200201223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131021 + ... + 193821.

It is an arithmetic number, because the mean of its divisors is an integer number (1457257608).

Almost surely, 210200201221 is an apocalyptic number.

It is an amenable number.

10200201221 is a deficient number, since it is larger than the sum of its proper divisors (1457859643).

10200201221 is an equidigital number, since it uses as much as digits as its factorization.

10200201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86011.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10200201221 its reverse (12210200201), we get a palindrome (22410401422).

The spelling of 10200201221 in words is "ten billion, two hundred million, two hundred one thousand, two hundred twenty-one".

Divisors: 1 7 23203 62801 162421 439607 1457171603 10200201221