1121210223 has 32 divisors (see below), whose sum is σ = 1761984000. Its totient is φ = 620784000.

The previous prime is 1121210219. The next prime is 1121210243. The reversal of 1121210223 is 3220121211.

It is not a de Polignac number, because 1121210223 - 2² = 1121210219 is a prime.

It is a super-2 number, since 2×1121210223² = 2514224728319419458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121210243) 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 31 ways as a sum of consecutive naturals, for example, 192153 + ... + 197901.

It is an arithmetic number, because the mean of its divisors is an integer number (55062000).

Almost surely, 2^1121210223 is an apocalyptic number.

1121210223 is a deficient number, since it is larger than the sum of its proper divisors (640773777).

1121210223 is a wasteful number, since it uses less digits than its factorization.

1121210223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6047.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1121210223 is about 33484.4773439873. The cubic root of 1121210223 is about 1038.8727378532.

Adding to 1121210223 its reverse (3220121211), we get a palindrome (4341331434).

The spelling of 1121210223 in words is "one billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty-three".