1001212223 has 8 divisors (see below), whose sum is σ = 1093780560. Its totient is φ = 908902080.

The previous prime is 1001212217. The next prime is 1001212231. The reversal of 1001212223 is 3222121001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001212223 - 2¹⁰ = 1001211199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001212198 and 1001212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001211223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56390 + ... + 71987.

It is an arithmetic number, because the mean of its divisors is an integer number (136722570).

Almost surely, 2^1001212223 is an apocalyptic number.

1001212223 is a deficient number, since it is larger than the sum of its proper divisors (92568337).

1001212223 is a wasteful number, since it uses less digits than its factorization.

1001212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129097.

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

The square root of 1001212223 is about 31641.9377251141. The cubic root of 1001212223 is about 1000.4039111671.

Adding to 1001212223 its reverse (3222121001), we get a palindrome (4223333224).

The spelling of 1001212223 in words is "one billion, one million, two hundred twelve thousand, two hundred twenty-three".