216611225212 has 48 divisors (see below), whose sum is σ = 389698988224. Its totient is φ = 105312960000.

The previous prime is 216611225203. The next prime is 216611225227. The reversal of 216611225212 is 212522116612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15097162 + ... + 15111502.

Almost surely, 2^216611225212 is an apocalyptic number.

It is an amenable number.

216611225212 is a deficient number, since it is larger than the sum of its proper divisors (173087763012).

216611225212 is a wasteful number, since it uses less digits than its factorization.

216611225212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15110 (or 15108 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The spelling of 216611225212 in words is "two hundred sixteen billion, six hundred eleven million, two hundred twenty-five thousand, two hundred twelve".