102102000221218 has 4 divisors (see below), whose sum is σ = 153153000331830. Its totient is φ = 51051000110608.

The previous prime is 102102000221203. The next prime is 102102000221219. The reversal of 102102000221218 is 812122000201201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 95875293477649 + 6226706743569 = 9791593^2 + 2495337^2 .

It is not an unprimeable number, because it can be changed into a prime (102102000221219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525500055303 + ... + 25525500055306.

Almost surely, 2^{102102000221218} is an apocalyptic number.

102102000221218 is a deficient number, since it is larger than the sum of its proper divisors (51051000110612).

102102000221218 is an equidigital number, since it uses as much as digits as its factorization.

102102000221218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51051000110611.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 102102000221218 its reverse (812122000201201), we get a palindrome (914224000422419).

The spelling of 102102000221218 in words is "one hundred two trillion, one hundred two billion, two hundred twenty-one thousand, two hundred eighteen".