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10221320123 = 71976852031
BaseRepresentation
bin10011000010011110…
…01111011110111011
3222101100012212020222
421201033033132323
5131413124220443
64410130210255
7511202534060
oct114117173673
928340185228
1010221320123
11437573a103
121b9312398b
13c6b7caa21
146cd6d4c67
153ec529468
hex2613cf7bb

10221320123 has 8 divisors (see below), whose sum is σ = 12296325120. Its totient is φ = 8300019240.

The previous prime is 10221320107. The next prime is 10221320143. The reversal of 10221320123 is 32102312201.

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 10221320123 - 24 = 10221320107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221320143) 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, 38425883 + ... + 38426148.

It is an arithmetic number, because the mean of its divisors is an integer number (1537040640).

Almost surely, 210221320123 is an apocalyptic number.

10221320123 is a deficient number, since it is larger than the sum of its proper divisors (2075004997).

10221320123 is an equidigital number, since it uses as much as digits as its factorization.

10221320123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76852057.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10221320123 its reverse (32102312201), we get a palindrome (42323632324).

The spelling of 10221320123 in words is "ten billion, two hundred twenty-one million, three hundred twenty thousand, one hundred twenty-three".

Divisors: 1 7 19 133 76852031 537964217 1460188589 10221320123