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10013033221 = 60116660621
BaseRepresentation
bin10010101001101001…
…01100001100000101
3221211211021210100021
421110310230030011
5131001314030341
64333330015141
7503063243452
oct112464541405
927754253307
1010013033221
114279107074
121b354174b1
13c37601839
146adb96829
153d90d49d1
hex254d2c305

10013033221 has 4 divisors (see below), whose sum is σ = 10029694444. Its totient is φ = 9996372000.

The previous prime is 10013033209. The next prime is 10013033273. The reversal of 10013033221 is 12233031001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7954142596 + 2058890625 = 89186^2 + 45375^2 .

It is a cyclic number.

It is not a de Polignac number, because 10013033221 - 227 = 9878815493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10013033195 and 10013033204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10013033281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8329710 + ... + 8330911.

It is an arithmetic number, because the mean of its divisors is an integer number (2507423611).

Almost surely, 210013033221 is an apocalyptic number.

It is an amenable number.

10013033221 is a deficient number, since it is larger than the sum of its proper divisors (16661223).

10013033221 is an equidigital number, since it uses as much as digits as its factorization.

10013033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16661222.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10013033221 its reverse (12233031001), we get a palindrome (22246064222).

The spelling of 10013033221 in words is "ten billion, thirteen million, thirty-three thousand, two hundred twenty-one".

Divisors: 1 601 16660621 10013033221