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10122232013 = 65315501121
BaseRepresentation
bin10010110110101010…
…10000000011001101
3222010102202122220222
421123111100003031
5131212242411023
64352230321125
7505560360335
oct113325200315
928112678828
1010122232013
114324810803
121b65ab91a5
13c541162ca
146c04a00c5
153e39a4cc8
hex25b5500cd

10122232013 has 4 divisors (see below), whose sum is σ = 10137733788. Its totient is φ = 10106730240.

The previous prime is 10122231983. The next prime is 10122232027. The reversal of 10122232013 is 31023222101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31023222101 = 94333288797.

It can be written as a sum of positive squares in 2 ways, for example, as 7285817449 + 2836414564 = 85357^2 + 53258^2 .

It is a cyclic number.

It is not a de Polignac number, because 10122232013 - 212 = 10122227917 is a prime.

It is a super-3 number, since 3×101222320133 (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122231982 and 10122232000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122232073) 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, 7749908 + ... + 7751213.

It is an arithmetic number, because the mean of its divisors is an integer number (2534433447).

Almost surely, 210122232013 is an apocalyptic number.

It is an amenable number.

10122232013 is a deficient number, since it is larger than the sum of its proper divisors (15501775).

10122232013 is an equidigital number, since it uses as much as digits as its factorization.

10122232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15501774.

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

Adding to 10122232013 its reverse (31023222101), we get a palindrome (41145454114).

The spelling of 10122232013 in words is "ten billion, one hundred twenty-two million, two hundred thirty-two thousand, thirteen".

Divisors: 1 653 15501121 10122232013