215073212 has 12 divisors (see below), whose sum is σ = 376967976. Its totient is φ = 107368080.

The previous prime is 215073211. The next prime is 215073233. The reversal of 215073212 is 212370512.

It is a happy number.

215073212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215073211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39239 + ... + 44382.

It is an arithmetic number, because the mean of its divisors is an integer number (31413998).

Almost surely, 2^215073212 is an apocalyptic number.

It is an amenable number.

215073212 is a deficient number, since it is larger than the sum of its proper divisors (161894764).

215073212 is a wasteful number, since it uses less digits than its factorization.

215073212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84268 (or 84266 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 215073212 is about 14665.3745946021. The cubic root of 215073212 is about 599.1406326970.

The spelling of 215073212 in words is "two hundred fifteen million, seventy-three thousand, two hundred twelve".