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21120033333 = 371005715873
BaseRepresentation
bin10011101010110110…
…100010001000110101
32000111220001212010210
4103222312202020311
5321223212031313
613411415340033
71345242215130
oct235266421065
960456055123
1021120033333
118a58787703
124115081619
131cb7750c59
141044d5b217
1583925c9c3
hex4eada2235

21120033333 has 8 divisors (see below), whose sum is σ = 32182907968. Its totient is φ = 12068590464.

The previous prime is 21120033329. The next prime is 21120033343. The reversal of 21120033333 is 33333002112.

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

It is not a de Polignac number, because 21120033333 - 22 = 21120033329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1005715873 = 21120033333 / (2 + 1 + 1 + 2 + 0 + 0 + 3 + 3 + 3 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120033343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502857916 + ... + 502857957.

It is an arithmetic number, because the mean of its divisors is an integer number (4022863496).

Almost surely, 221120033333 is an apocalyptic number.

It is an amenable number.

21120033333 is a deficient number, since it is larger than the sum of its proper divisors (11062874635).

21120033333 is a wasteful number, since it uses less digits than its factorization.

21120033333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005715883.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21120033333 its reverse (33333002112), we get a palindrome (54453035445).

The spelling of 21120033333 in words is "twenty-one billion, one hundred twenty million, thirty-three thousand, three hundred thirty-three".

Divisors: 1 3 7 21 1005715873 3017147619 7040011111 21120033333