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102201202221 = 3156832172229
BaseRepresentation
bin101111100101110101…
…0101001011000101101
3100202210120121000000220
41133023222221120231
53133302001432341
6114541154241553
710245432612456
oct1371352513055
9322716530026
10102201202221
113a385a06998
1217982b862b9
139839872371
144d3753212d
1529d25e2a66
hex17cbaa962d

102201202221 has 8 divisors (see below), whose sum is σ = 136277021280. Its totient is φ = 68129758992.

The previous prime is 102201202211. The next prime is 102201202247. The reversal of 102201202221 is 122202102201.

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

It is not a de Polignac number, because 102201202221 - 25 = 102201202189 is a prime.

It is a super-3 number, since 3×1022012022213 (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102201202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201202211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039066 + ... + 1133163.

It is an arithmetic number, because the mean of its divisors is an integer number (17034627660).

Almost surely, 2102201202221 is an apocalyptic number.

It is an amenable number.

102201202221 is a deficient number, since it is larger than the sum of its proper divisors (34075819059).

102201202221 is a wasteful number, since it uses less digits than its factorization.

102201202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187915.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102201202221 its reverse (122202102201), we get a palindrome (224403304422).

The spelling of 102201202221 in words is "one hundred two billion, two hundred one million, two hundred two thousand, two hundred twenty-one".

Divisors: 1 3 15683 47049 2172229 6516687 34067067407 102201202221