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123102344101 = 1111191122191
BaseRepresentation
bin111001010100101111…
…0001011001110100101
3102202202012210000112211
41302221132023032211
54004103200002401
6132315154243421
711615406442252
oct1625136131645
9382665700484
10123102344101
1148231078170
121ba36886571
13b7bab53339
145d5b390429
153307513951
hex1ca978b3a5

123102344101 has 4 divisors (see below), whose sum is σ = 134293466304. Its totient is φ = 111911221900.

The previous prime is 123102344087. The next prime is 123102344149. The reversal of 123102344101 is 101443201321.

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 123102344101 - 29 = 123102343589 is a prime.

It is a super-2 number, since 2×1231023441012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123102344161) 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, 5595561085 + ... + 5595561106.

It is an arithmetic number, because the mean of its divisors is an integer number (33573366576).

Almost surely, 2123102344101 is an apocalyptic number.

123102344101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123102344101 is a deficient number, since it is larger than the sum of its proper divisors (11191122203).

123102344101 is a wasteful number, since it uses less digits than its factorization.

123102344101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191122202.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 123102344101 its reverse (101443201321), we get a palindrome (224545545422).

The spelling of 123102344101 in words is "one hundred twenty-three billion, one hundred two million, three hundred forty-four thousand, one hundred one".

Divisors: 1 11 11191122191 123102344101