12200221101218 has 4 divisors (see below), whose sum is σ = 18300331651830. Its totient is φ = 6100110550608.

The previous prime is 12200221101217. The next prime is 12200221101221. The reversal of 12200221101218 is 81210112200221.

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., 11550638296129 + 649582805089 = 3398623^2 + 805967^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12200221101193 and 12200221101202.

It is not an unprimeable number, because it can be changed into a prime (12200221101217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3050055275303 + ... + 3050055275306.

Almost surely, 2^{12200221101218} is an apocalyptic number.

12200221101218 is a deficient number, since it is larger than the sum of its proper divisors (6100110550612).

12200221101218 is an equidigital number, since it uses as much as digits as its factorization.

12200221101218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100110550611.

The product of its (nonzero) digits is 256, while the sum is 23.

Adding to 12200221101218 its reverse (81210112200221), we get a palindrome (93410333301439).

The spelling of 12200221101218 in words is "twelve trillion, two hundred billion, two hundred twenty-one million, one hundred one thousand, two hundred eighteen".