221441020234004 has 12 divisors (see below), whose sum is σ = 387521919479604. Its totient is φ = 110720471811264.

The previous prime is 221441020233997. The next prime is 221441020234043. The reversal of 221441020234004 is 400432020144122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 84362351270404 + 137078668963600 = 9184898^2 + 11708060^2 .

It is a super-2 number, since 2×221441020234004² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6387392 + ... + 21992744.

It is an arithmetic number, because the mean of its divisors is an integer number (32293493289967).

Almost surely, 2^{221441020234004} is an apocalyptic number.

It is an amenable number.

221441020234004 is a deficient number, since it is larger than the sum of its proper divisors (166080899245600).

221441020234004 is a wasteful number, since it uses less digits than its factorization.

221441020234004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19152874 (or 19152872 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 221441020234004 its reverse (400432020144122), we get a palindrome (621873040378126).

The spelling of 221441020234004 in words is "two hundred twenty-one trillion, four hundred forty-one billion, twenty million, two hundred thirty-four thousand, four".