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13220122301 = 17777654253
BaseRepresentation
bin11000100111111101…
…10000111010111101
31021010022222210111022
430103332300322331
5204033322403201
610023453033525
7645415120421
oct142376607275
937108883438
1013220122301
115674461611
12268b4858a5
131328b82c99
148d5aa8b81
1552593341b
hex313fb0ebd

13220122301 has 4 divisors (see below), whose sum is σ = 13997776572. Its totient is φ = 12442468032.

The previous prime is 13220122283. The next prime is 13220122313. The reversal of 13220122301 is 10322102231.

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 7625830276 + 5594292025 = 87326^2 + 74795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13220122301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 777654253 = 13220122301 / (1 + 3 + 2 + 2 + 0 + 1 + 2 + 2 + 3 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13220122301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220122001) 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, 388827110 + ... + 388827143.

It is an arithmetic number, because the mean of its divisors is an integer number (3499444143).

Almost surely, 213220122301 is an apocalyptic number.

It is an amenable number.

13220122301 is a deficient number, since it is larger than the sum of its proper divisors (777654271).

13220122301 is an equidigital number, since it uses as much as digits as its factorization.

13220122301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777654270.

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

Adding to 13220122301 its reverse (10322102231), we get a palindrome (23542224532).

The spelling of 13220122301 in words is "thirteen billion, two hundred twenty million, one hundred twenty-two thousand, three hundred one".

Divisors: 1 17 777654253 13220122301