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121223 = 241503
BaseRepresentation
bin11101100110000111
320011021202
4131212013
512334343
62333115
71013264
oct354607
9204252
10121223
1183093
125a19b
134323b
143226b
1525db8
hex1d987

121223 has 4 divisors (see below), whose sum is σ = 121968. Its totient is φ = 120480.

The previous prime is 121189. The next prime is 121229. The reversal of 121223 is 322121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 322121 = 3110391.

It is a cyclic number.

It is not a de Polignac number, because 121223 - 210 = 120199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121229) 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, 11 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (30492).

2121223 is an apocalyptic number.

121223 is a deficient number, since it is larger than the sum of its proper divisors (745).

121223 is an equidigital number, since it uses as much as digits as its factorization.

121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744.

The product of its digits is 24, while the sum is 11.

The square root of 121223 is about 348.1709350305. The cubic root of 121223 is about 49.4912408404.

Adding to 121223 its reverse (322121), we get a palindrome (443344).

The spelling of 121223 in words is "one hundred twenty-one thousand, two hundred twenty-three", and thus it is an iban number.

Divisors: 1 241 503 121223