215222012 has 12 divisors (see below), whose sum is σ = 377667360. Its totient is φ = 107317056.

The previous prime is 215222003. The next prime is 215222027. The reversal of 215222012 is 210222512.

215222012 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71837 + ... + 74772.

It is an arithmetic number, because the mean of its divisors is an integer number (31472280).

Almost surely, 2^215222012 is an apocalyptic number.

It is an amenable number.

215222012 is a deficient number, since it is larger than the sum of its proper divisors (162445348).

215222012 is a wasteful number, since it uses less digits than its factorization.

215222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146980 (or 146978 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 215222012 is about 14670.4468916254. The cubic root of 215222012 is about 599.2787741435.

Adding to 215222012 its reverse (210222512), we get a palindrome (425444524).

The spelling of 215222012 in words is "two hundred fifteen million, two hundred twenty-two thousand, twelve".