101221223 has 4 divisors (see below), whose sum is σ = 104711640. Its totient is φ = 97730808.

The previous prime is 101221201. The next prime is 101221259. The reversal of 101221223 is 322122101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101221223 - 2⁸ = 101220967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101221198 and 101221207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745165 + ... + 1745222.

It is an arithmetic number, because the mean of its divisors is an integer number (26177910).

Almost surely, 2^101221223 is an apocalyptic number.

101221223 is a deficient number, since it is larger than the sum of its proper divisors (3490417).

101221223 is an equidigital number, since it uses as much as digits as its factorization.

101221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490416.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101221223 is about 10060.8758565047. The cubic root of 101221223 is about 466.0407152499.

Adding to 101221223 its reverse (322122101), we get a palindrome (423343324).

The spelling of 101221223 in words is "one hundred one million, two hundred twenty-one thousand, two hundred twenty-three".