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10122020201 = 17595412953
BaseRepresentation
bin10010110110101000…
…11100010101101001
3222010102100220101002
421123110130111221
5131212214121301
64352222004345
7505555515656
oct113324342551
928112326332
1010122020201
114324686657
121b65a166b5
13c54070a87
146c0446c2d
153e396216b
hex25b51c569

10122020201 has 4 divisors (see below), whose sum is σ = 10717433172. Its totient is φ = 9526607232.

The previous prime is 10122020179. The next prime is 10122020219. The reversal of 10122020201 is 10202022101.

It is a happy number.

10122020201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10202022101 = 73931379957.

It can be written as a sum of positive squares in 2 ways, for example, as 7208179801 + 2913840400 = 84901^2 + 53980^2 .

It is a cyclic number.

It is not a de Polignac number, because 10122020201 - 210 = 10122019177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10122020291) 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 3 ways as a sum of consecutive naturals, for example, 297706460 + ... + 297706493.

It is an arithmetic number, because the mean of its divisors is an integer number (2679358293).

Almost surely, 210122020201 is an apocalyptic number.

It is an amenable number.

10122020201 is a deficient number, since it is larger than the sum of its proper divisors (595412971).

10122020201 is an equidigital number, since it uses as much as digits as its factorization.

10122020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595412970.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10122020201 its reverse (10202022101), we get a palindrome (20324042302).

The spelling of 10122020201 in words is "ten billion, one hundred twenty-two million, twenty thousand, two hundred one".

Divisors: 1 17 595412953 10122020201