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30001222013 = 722921112753
BaseRepresentation
bin11011111100001101…
…100101000101111101
32212102211120222122212
4123330031211011331
5442420303101023
621440554150205
72111313115400
oct337415450575
985384528585
1030001222013
11117a59a9164
125993422365
132aa1702399
141648685d37
15ba8cbae78
hex6fc36517d

30001222013 has 12 divisors (see below), whose sum is σ = 36102809340. Its totient is φ = 24828596352.

The previous prime is 30001222001. The next prime is 30001222109. The reversal of 30001222013 is 31022210003.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9195467449 + 20805754564 = 95893^2 + 144242^2 .

It is not a de Polignac number, because 30001222013 - 26 = 30001221949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001222213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10554956 + ... + 10557797.

It is an arithmetic number, because the mean of its divisors is an integer number (3008567445).

Almost surely, 230001222013 is an apocalyptic number.

It is an amenable number.

30001222013 is a deficient number, since it is larger than the sum of its proper divisors (6101587327).

30001222013 is a wasteful number, since it uses less digits than its factorization.

30001222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21112796 (or 21112789 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30001222013 its reverse (31022210003), we get a palindrome (61023432016).

The spelling of 30001222013 in words is "thirty billion, one million, two hundred twenty-two thousand, thirteen".

Divisors: 1 7 29 49 203 1421 21112753 147789271 612269837 1034524897 4285888859 30001222013