216855022 has 8 divisors (see below), whose sum is σ = 325552176. Its totient is φ = 108337632.

The previous prime is 216855019. The next prime is 216855059. The reversal of 216855022 is 220558612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216855022² = 94052201133240968, which contains 22 as substring.

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, 41883 + ... + 46774.

It is an arithmetic number, because the mean of its divisors is an integer number (40694022).

Almost surely, 2^216855022 is an apocalyptic number.

216855022 is a deficient number, since it is larger than the sum of its proper divisors (108697154).

216855022 is a wasteful number, since it uses less digits than its factorization.

216855022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89882.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 216855022 is about 14725.9981665081. The cubic root of 216855022 is about 600.7906447143.

The spelling of 216855022 in words is "two hundred sixteen million, eight hundred fifty-five thousand, twenty-two".