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10122001223 = 73138657551
BaseRepresentation
bin10010110110101000…
…10111101101000111
3222010102022221100012
421123110113231013
5131212213014343
64352221340435
7505555406435
oct113324275507
928112287305
1010122001223
114324673374
121b65a0771b
13c54065249
146c043dd55
153e395b718
hex25b517b47

10122001223 has 4 divisors (see below), whose sum is σ = 10260658848. Its totient is φ = 9983343600.

The previous prime is 10122001217. The next prime is 10122001243. The reversal of 10122001223 is 32210022101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32210022101 = 311039032971.

It is a cyclic number.

It is not a de Polignac number, because 10122001223 - 26 = 10122001159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122001198 and 10122001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122001243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69328703 + ... + 69328848.

It is an arithmetic number, because the mean of its divisors is an integer number (2565164712).

Almost surely, 210122001223 is an apocalyptic number.

10122001223 is a deficient number, since it is larger than the sum of its proper divisors (138657625).

10122001223 is an equidigital number, since it uses as much as digits as its factorization.

10122001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138657624.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10122001223 its reverse (32210022101), we get a palindrome (42332023324).

The spelling of 10122001223 in words is "ten billion, one hundred twenty-two million, one thousand, two hundred twenty-three".

Divisors: 1 73 138657551 10122001223