216259012 has 12 divisors (see below), whose sum is σ = 378556416. Its totient is φ = 108100040.

The previous prime is 216258983. The next prime is 216259033. The reversal of 216259012 is 210952612.

It is a super-2 number, since 2×216259012² = 93535920542432288, which contains 22 as substring.

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, 23733 + ... + 31555.

It is an arithmetic number, because the mean of its divisors is an integer number (31546368).

Almost surely, 2^216259012 is an apocalyptic number.

It is an amenable number.

216259012 is a deficient number, since it is larger than the sum of its proper divisors (162297404).

216259012 is a wasteful number, since it uses less digits than its factorization.

216259012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14738 (or 14736 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 216259012 is about 14705.7475838531. The cubic root of 216259012 is about 600.2397301289.

The spelling of 216259012 in words is "two hundred sixteen million, two hundred fifty-nine thousand, twelve".