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10111201097 = 23439617439
BaseRepresentation
bin10010110101010110…
…01010111101001001
3222002200000020100112
421122223022331021
5131201431413342
64351154044105
7505364535254
oct113253127511
928080006315
1010111201097
114319567048
121b62279635
13c51a5343a
146bcc2c09b
153e2a26682
hex25aacaf49

10111201097 has 4 divisors (see below), whose sum is σ = 10550818560. Its totient is φ = 9671583636.

The previous prime is 10111201069. The next prime is 10111201153. The reversal of 10111201097 is 79010211101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10111201097 - 26 = 10111201033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 439617439 = 10111201097 / (1 + 0 + 1 + 1 + 1 + 2 + 0 + 1 + 0 + 9 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111201007) 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, 219808697 + ... + 219808742.

It is an arithmetic number, because the mean of its divisors is an integer number (2637704640).

Almost surely, 210111201097 is an apocalyptic number.

It is an amenable number.

10111201097 is a deficient number, since it is larger than the sum of its proper divisors (439617463).

10111201097 is an equidigital number, since it uses as much as digits as its factorization.

10111201097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439617462.

The product of its (nonzero) digits is 126, while the sum is 23.

Adding to 10111201097 its reverse (79010211101), we get a palindrome (89121412198).

The spelling of 10111201097 in words is "ten billion, one hundred eleven million, two hundred one thousand, ninety-seven".

Divisors: 1 23 439617439 10111201097