1520012223 has 20 divisors (see below), whose sum is σ = 2282423968. Its totient is φ = 1008080640.

The previous prime is 1520012191. The next prime is 1520012227. The reversal of 1520012223 is 3222100251.

1520012223 is a `hidden beast` number, since 1 + 520 + 0 + 122 + 23 = 666.

It is not a de Polignac number, because 1520012223 - 2⁵ = 1520012191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1520012196 and 1520012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520012227) 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 19 ways as a sum of consecutive naturals, for example, 32983 + ... + 64248.

Almost surely, 2^1520012223 is an apocalyptic number.

1520012223 is a deficient number, since it is larger than the sum of its proper divisors (762411745).

1520012223 is an equidigital number, since it uses as much as digits as its factorization.

1520012223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97436 (or 97427 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1520012223 is about 38987.3341355882. The cubic root of 1520012223 is about 1149.7824977443.

Adding to 1520012223 its reverse (3222100251), we get a palindrome (4742112474).

The spelling of 1520012223 in words is "one billion, five hundred twenty million, twelve thousand, two hundred twenty-three".