1222515315 has 64 divisors (see below), whose sum is σ = 2490700800. Its totient is φ = 557321472.

The previous prime is 1222515311. The next prime is 1222515319. The reversal of 1222515315 is 5135152221.

1222515315 is a `hidden beast` number, since 122 + 2 + 5 + 1 + 531 + 5 = 666.

1222515315 is digitally balanced in base 4 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1222515311) and next prime (1222515319).

It is not a de Polignac number, because 1222515315 - 2² = 1222515311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1222515311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 384924 + ... + 388086.

It is an arithmetic number, because the mean of its divisors is an integer number (38917200).

Almost surely, 2^1222515315 is an apocalyptic number.

1222515315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1222515315 is an abundant number, since it is smaller than the sum of its proper divisors (1268185485).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222515315 is a wasteful number, since it uses less digits than its factorization.

1222515315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593 (or 3587 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 1222515315 is about 34964.4864827156. The cubic root of 1222515315 is about 1069.2635672722.

Adding to 1222515315 its reverse (5135152221), we get a palindrome (6357667536).

The spelling of 1222515315 in words is "one billion, two hundred twenty-two million, five hundred fifteen thousand, three hundred fifteen".