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122101 = 717443
BaseRepresentation
bin11101110011110101
320012111021
4131303311
512401401
62341141
71015660
oct356365
9205437
10122101
1183811
125a7b1
1343765
14326d7
15262a1
hex1dcf5

122101 has 4 divisors (see below), whose sum is σ = 139552. Its totient is φ = 104652.

The previous prime is 122099. The next prime is 122117. The reversal of 122101 is 101221.

Adding to 122101 its reverse (101221), we get a palindrome (223322).

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 122101 - 21 = 122099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7), and also a Moran number because the ratio is a prime number: 17443 = 122101 / (1 + 2 + 2 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122131) 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, 8715 + ... + 8728.

It is an arithmetic number, because the mean of its divisors is an integer number (34888).

2122101 is an apocalyptic number.

It is an amenable number.

122101 is a deficient number, since it is larger than the sum of its proper divisors (17451).

122101 is an equidigital number, since it uses as much as digits as its factorization.

122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17450.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 122101 is about 349.4295350997. The cubic root of 122101 is about 49.6104393999.

The spelling of 122101 in words is "one hundred twenty-two thousand, one hundred one", and thus it is an iban number.

Divisors: 1 7 17443 122101