221654163421362 has 96 divisors (see below), whose sum is σ = 522766688923584. Its totient is φ = 62462643264000.

The previous prime is 221654163421331. The next prime is 221654163421367. The reversal of 221654163421362 is 263124361456122.

It is not an unprimeable number, because it can be changed into a prime (221654163421367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7108662 + ... + 22222542.

It is an arithmetic number, because the mean of its divisors is an integer number (5445486342954).

Almost surely, 2^{221654163421362} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221654163421362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261383344461792).

221654163421362 is an abundant number, since it is smaller than the sum of its proper divisors (301112525502222).

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

221654163421362 is a wasteful number, since it uses less digits than its factorization.

221654163421362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15114584 (or 15114577 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 48.

The spelling of 221654163421362 in words is "two hundred twenty-one trillion, six hundred fifty-four billion, one hundred sixty-three million, four hundred twenty-one thousand, three hundred sixty-two".