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10023042221 = 37465758169
BaseRepresentation
bin10010101010110101…
…10111110010101101
3221212112010022002222
421111122313302231
5131011344322341
64334324325125
7503244311303
oct112532676255
927775108088
1010023042221
114283822a75
121b388437a5
13c396c751a
146b1240273
153d9e1044b
hex2556b7cad

10023042221 has 8 divisors (see below), whose sum is σ = 10296322680. Its totient is φ = 9749887488.

The previous prime is 10023042191. The next prime is 10023042247. The reversal of 10023042221 is 12224032001.

It can be written as a sum of positive squares in 4 ways, for example, as 876988996 + 9146053225 = 29614^2 + 95635^2 .

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 10023042221 - 26 = 10023042157 is a prime.

It is a super-3 number, since 3×100230422213 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10023042221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10023042521) 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, 143225 + ... + 201393.

It is an arithmetic number, because the mean of its divisors is an integer number (1287040335).

Almost surely, 210023042221 is an apocalyptic number.

It is an amenable number.

10023042221 is a deficient number, since it is larger than the sum of its proper divisors (273280459).

10023042221 is an equidigital number, since it uses as much as digits as its factorization.

10023042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62863.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 10023042221 its reverse (12224032001), we get a palindrome (22247074222).

The spelling of 10023042221 in words is "ten billion, twenty-three million, forty-two thousand, two hundred twenty-one".

Divisors: 1 37 4657 58169 172309 2152253 270893033 10023042221