1212230015 has 12 divisors (see below), whose sum is σ = 1506572184. Its totient is φ = 936339936.

The previous prime is 1212229979. The next prime is 1212230017. The reversal of 1212230015 is 5100322121.

It is a happy number.

It is not a de Polignac number, because 1212230015 - 2⁶ = 1212229951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212229975 and 1212230002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212230017) 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, 139937 + ... + 148346.

It is an arithmetic number, because the mean of its divisors is an integer number (125547682).

Almost surely, 2^1212230015 is an apocalyptic number.

1212230015 is a deficient number, since it is larger than the sum of its proper divisors (294342169).

1212230015 is an equidigital number, since it uses as much as digits as its factorization.

1212230015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288346 (or 288317 counting only the distinct ones).

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

The square root of 1212230015 is about 34817.0937184596. The cubic root of 1212230015 is about 1066.2564655900.

Adding to 1212230015 its reverse (5100322121), we get a palindrome (6312552136).

The spelling of 1212230015 in words is "one billion, two hundred twelve million, two hundred thirty thousand, fifteen".