1223001215 has 12 divisors (see below), whose sum is σ = 1548911304. Its totient is φ = 926904816.

The previous prime is 1223001187. The next prime is 1223001217. The reversal of 1223001215 is 5121003221.

It is a happy number.

It is not a de Polignac number, because 1223001215 - 2⁶ = 1223001151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223001193 and 1223001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223001217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336977 + ... + 340586.

It is an arithmetic number, because the mean of its divisors is an integer number (129075942).

Almost surely, 2^1223001215 is an apocalyptic number.

1223001215 is a deficient number, since it is larger than the sum of its proper divisors (325910089).

1223001215 is an equidigital number, since it uses as much as digits as its factorization.

1223001215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677606 (or 677587 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1223001215 is about 34971.4342714164. The cubic root of 1223001215 is about 1069.4052114006.

Adding to 1223001215 its reverse (5121003221), we get a palindrome (6344004436).

The spelling of 1223001215 in words is "one billion, two hundred twenty-three million, one thousand, two hundred fifteen".