215224012 has 12 divisors (see below), whose sum is σ = 398797560. Its totient is φ = 101281856.

The previous prime is 215224003. The next prime is 215224021. The reversal of 215224012 is 210422512.

It is an interprime number because it is at equal distance from previous prime (215224003) and next prime (215224021).

It is a super-2 number, since 2×215224012² = 92642750682752288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582462 + ... + 1582597.

It is an arithmetic number, because the mean of its divisors is an integer number (33233130).

Almost surely, 2^215224012 is an apocalyptic number.

It is an amenable number.

215224012 is a deficient number, since it is larger than the sum of its proper divisors (183573548).

215224012 is a wasteful number, since it uses less digits than its factorization.

215224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165080 (or 3165078 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 215224012 is about 14670.5150557163. The cubic root of 215224012 is about 599.2806304497.

Adding to 215224012 its reverse (210422512), we get a palindrome (425646524).

The spelling of 215224012 in words is "two hundred fifteen million, two hundred twenty-four thousand, twelve".