1021122223 has 8 divisors (see below), whose sum is σ = 1114201296. Its totient is φ = 928084800.

The previous prime is 1021122209. The next prime is 1021122251. The reversal of 1021122223 is 3222211201.

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 a de Polignac number, because none of the positive numbers 2^k-1021122223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021122197 and 1021122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021122253) 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, 64033 + ... + 78373.

It is an arithmetic number, because the mean of its divisors is an integer number (139275162).

Almost surely, 2^1021122223 is an apocalyptic number.

1021122223 is a deficient number, since it is larger than the sum of its proper divisors (93079073).

1021122223 is a wasteful number, since it uses less digits than its factorization.

1021122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20825.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1021122223 is about 31955.0030981066. The cubic root of 1021122223 is about 1006.9917426061.

Adding to 1021122223 its reverse (3222211201), we get a palindrome (4243333424).

The spelling of 1021122223 in words is "one billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-three".