215247212 has 24 divisors (see below), whose sum is σ = 390232080. Its totient is φ = 103811840.

The previous prime is 215247209. The next prime is 215247233. The reversal of 215247212 is 212742512.

215247212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7223 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (16259670).

Almost surely, 2^215247212 is an apocalyptic number.

It is an amenable number.

215247212 is a deficient number, since it is larger than the sum of its proper divisors (174984868).

215247212 is a wasteful number, since it uses less digits than its factorization.

215247212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14881 (or 14879 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 215247212 is about 14671.3057360277. The cubic root of 215247212 is about 599.3021627607.

Adding to 215247212 its reverse (212742512), we get a palindrome (427989724).

The spelling of 215247212 in words is "two hundred fifteen million, two hundred forty-seven thousand, two hundred twelve".