1212023223 has 16 divisors (see below), whose sum is σ = 1797193440. Its totient is φ = 807293952.

The previous prime is 1212023191. The next prime is 1212023251. The reversal of 1212023223 is 3223202121.

It is not a de Polignac number, because 1212023223 - 2⁵ = 1212023191 is a prime.

It is a super-4 number, since 4×1212023223⁴ (a number of 37 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212023196 and 1212023205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212023123) 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, 11665 + ... + 50597.

It is an arithmetic number, because the mean of its divisors is an integer number (112324590).

Almost surely, 2^1212023223 is an apocalyptic number.

1212023223 is a deficient number, since it is larger than the sum of its proper divisors (585170217).

1212023223 is a wasteful number, since it uses less digits than its factorization.

1212023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40095 (or 40089 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1212023223 is about 34814.1239010836. The cubic root of 1212023223 is about 1066.1958319250.

Adding to 1212023223 its reverse (3223202121), we get a palindrome (4435225344).

The spelling of 1212023223 in words is "one billion, two hundred twelve million, twenty-three thousand, two hundred twenty-three".