1212520315 has 4 divisors (see below), whose sum is σ = 1455024384. Its totient is φ = 970016248.

The previous prime is 1212520307. The next prime is 1212520327. The reversal of 1212520315 is 5130252121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212520315 - 2³ = 1212520307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121252027 + ... + 121252036.

It is an arithmetic number, because the mean of its divisors is an integer number (363756096).

Almost surely, 2^1212520315 is an apocalyptic number.

1212520315 is a deficient number, since it is larger than the sum of its proper divisors (242504069).

1212520315 is an equidigital number, since it uses as much as digits as its factorization.

1212520315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242504068.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1212520315 is about 34821.2623981383. The cubic root of 1212520315 is about 1066.3415730759.

Adding to 1212520315 its reverse (5130252121), we get a palindrome (6342772436).

The spelling of 1212520315 in words is "one billion, two hundred twelve million, five hundred twenty thousand, three hundred fifteen".