1211120223 has 16 divisors (see below), whose sum is σ = 1730582016. Its totient is φ = 751433760.

The previous prime is 1211120221. The next prime is 1211120227. The reversal of 1211120223 is 3220211121.

It is not a de Polignac number, because 1211120223 - 2¹ = 1211120221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211120221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234643 + ... + 239748.

It is an arithmetic number, because the mean of its divisors is an integer number (108161376).

Almost surely, 2^1211120223 is an apocalyptic number.

1211120223 is a deficient number, since it is larger than the sum of its proper divisors (519461793).

1211120223 is a wasteful number, since it uses less digits than its factorization.

1211120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474454.

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

The square root of 1211120223 is about 34801.1526102226. The cubic root of 1211120223 is about 1065.9309816544.

Adding to 1211120223 its reverse (3220211121), we get a palindrome (4431331344).

The spelling of 1211120223 in words is "one billion, two hundred eleven million, one hundred twenty thousand, two hundred twenty-three".