101212223 has 4 divisors (see below), whose sum is σ = 115671120. Its totient is φ = 86753328.

The previous prime is 101212219. The next prime is 101212249. The reversal of 101212223 is 322212101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322212101 = 17 ⋅18953653.

It is a cyclic number.

It is not a de Polignac number, because 101212223 - 2² = 101212219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101212198 and 101212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212253) 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, 7229438 + ... + 7229451.

It is an arithmetic number, because the mean of its divisors is an integer number (28917780).

Almost surely, 2^101212223 is an apocalyptic number.

101212223 is a deficient number, since it is larger than the sum of its proper divisors (14458897).

101212223 is an equidigital number, since it uses as much as digits as its factorization.

101212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458896.

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

The square root of 101212223 is about 10060.4285694000. The cubic root of 101212223 is about 466.0269023010.

Adding to 101212223 its reverse (322212101), we get a palindrome (423424324).

The spelling of 101212223 in words is "one hundred one million, two hundred twelve thousand, two hundred twenty-three".