1211022223 has 8 divisors (see below), whose sum is σ = 1293194880. Its totient is φ = 1131543840.

The previous prime is 1211022193. The next prime is 1211022229. The reversal of 1211022223 is 3222201121.

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 1211022223 - 2¹⁷ = 1210891151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211022197 and 1211022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211022229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672640 + ... + 674437.

It is an arithmetic number, because the mean of its divisors is an integer number (161649360).

Almost surely, 2^1211022223 is an apocalyptic number.

1211022223 is a deficient number, since it is larger than the sum of its proper divisors (82172657).

1211022223 is a wasteful number, since it uses less digits than its factorization.

1211022223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347137.

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

The square root of 1211022223 is about 34799.7445823960. The cubic root of 1211022223 is about 1065.9022302962.

Adding to 1211022223 its reverse (3222201121), we get a palindrome (4433223344).

The spelling of 1211022223 in words is "one billion, two hundred eleven million, twenty-two thousand, two hundred twenty-three".