22001315 has 32 divisors (see below), whose sum is σ = 32348160. Its totient is φ = 14022144.

The previous prime is 22001303. The next prime is 22001321. The reversal of 22001315 is 51310022.

22001315 = 413² + 414² + ... + 514².

It is a happy number.

It is not a de Polignac number, because 22001315 - 2¹⁰ = 22000291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22001315.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61106 + ... + 61464.

It is an arithmetic number, because the mean of its divisors is an integer number (1010880).

Almost surely, 2^22001315 is an apocalyptic number.

22001315 is a deficient number, since it is larger than the sum of its proper divisors (10346845).

22001315 is a wasteful number, since it uses less digits than its factorization.

22001315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 22001315 is about 4690.5559371998. Note that the first 3 decimals coincide. The cubic root of 22001315 is about 280.2095158054.

Adding to 22001315 its reverse (51310022), we get a palindrome (73311337).

The spelling of 22001315 in words is "twenty-two million, one thousand, three hundred fifteen".