221424313402000 has 80 divisors (see below), whose sum is σ = 545505952138992. Its totient is φ = 86898598425600.

The previous prime is 221424313401953. The next prime is 221424313402013. The reversal of 221424313402000 is 204313424122.

It can be written as a sum of positive squares in 8 ways, for example, as 42258164394384 + 179166149007616 = 6500628^2 + 13385296^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 221424313402000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1044348309 + ... + 1044560308.

Almost surely, 2^{221424313402000} is an apocalyptic number.

221424313402000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221424313402000 is an abundant number, since it is smaller than the sum of its proper divisors (324081638736992).

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

221424313402000 is a wasteful number, since it uses less digits than its factorization.

221424313402000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088908693 (or 2088908677 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221424313402000 its reverse (204313424122), we get a palindrome (221628626826122).

The spelling of 221424313402000 in words is "two hundred twenty-one trillion, four hundred twenty-four billion, three hundred thirteen million, four hundred two thousand".