216702100000 has 72 divisors (see below), whose sum is σ = 533256439716. Its totient is φ = 86680800000.

The previous prime is 216702099979. The next prime is 216702100007. The reversal of 216702100000 is 1207612.

It can be written as a sum of positive squares in 6 ways, for example, as 94025636496 + 122676463504 = 306636^2 + 350252^2 .

It is not an unprimeable number, because it can be changed into a prime (216702100007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 983511 + ... + 1183510.

Almost surely, 2^216702100000 is an apocalyptic number.

216702100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216702100000 is an abundant number, since it is smaller than the sum of its proper divisors (316554339716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216702100000 is an frugal number, since it uses more digits than its factorization.

216702100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167056 (or 2167028 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 216702100000 its reverse (1207612), we get a palindrome (216703307612).

The spelling of 216702100000 in words is "two hundred sixteen billion, seven hundred two million, one hundred thousand".