216212551522 has 8 divisors (see below), whose sum is σ = 353802357072. Its totient is φ = 98278432500.

The previous prime is 216212551517. The next prime is 216212551523. The reversal of 216212551522 is 225155212612.

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

It is not an unprimeable number, because it can be changed into a prime (216212551523) 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, 4913921604 + ... + 4913921647.

It is an arithmetic number, because the mean of its divisors is an integer number (44225294634).

Almost surely, 2^216212551522 is an apocalyptic number.

216212551522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216212551522 is a deficient number, since it is larger than the sum of its proper divisors (137589805550).

216212551522 is a wasteful number, since it uses less digits than its factorization.

216212551522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9827843264.

The product of its digits is 24000, while the sum is 34.

The spelling of 216212551522 in words is "two hundred sixteen billion, two hundred twelve million, five hundred fifty-one thousand, five hundred twenty-two".