221301302120000 has 70 divisors (see below), whose sum is σ = 548755306433598. Its totient is φ = 88520520832000.

The previous prime is 221301302119993. The next prime is 221301302120011. The reversal of 221301302120000 is 21203103122.

It can be written as a sum of positive squares in 5 ways, for example, as 22814455496704 + 198486846623296 = 4776448^2 + 14088536^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2766226277 + ... + 2766306276.

Almost surely, 2^{221301302120000} is an apocalyptic number.

221301302120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221301302120000 is an abundant number, since it is smaller than the sum of its proper divisors (327454004313598).

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

221301302120000 is an frugal number, since it uses more digits than its factorization.

221301302120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532532585 (or 5532532560 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221301302120000 its reverse (21203103122), we get a palindrome (221322505223122).

The spelling of 221301302120000 in words is "two hundred twenty-one trillion, three hundred one billion, three hundred two million, one hundred twenty thousand".