101223 has 16 divisors (see below), whose sum is σ = 157440. Its totient is φ = 64152.

The previous prime is 101221. The next prime is 101267. The reversal of 101223 is 322101.

101223 = T₄₂ + T₄₃ + ... + T₈₇.

It is a happy number.

It is not a de Polignac number, because 101223 - 2¹ = 101221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540 + ... + 702.

It is an arithmetic number, because the mean of its divisors is an integer number (9840).

2¹⁰¹²²³ is an apocalyptic number.

101223 is a deficient number, since it is larger than the sum of its proper divisors (56217).

101223 is a wasteful number, since it uses less digits than its factorization.

101223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 101223 is about 318.1556222983. The cubic root of 101223 is about 46.6043442443.

Adding to 101223 its reverse (322101), we get a palindrome (423324).

It can be divided in two parts, 1012 and 23, that added together give a triangular number (1035 = T₄₅).

The spelling of 101223 in words is "one hundred one thousand, two hundred twenty-three", and thus it is an iban number.