221201324134004 has 6 divisors (see below), whose sum is σ = 387102317234514. Its totient is φ = 110600662067000.

The previous prime is 221201324134003. The next prime is 221201324134009. The reversal of 221201324134004 is 400431423102122.

221201324134004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 184603905957604 + 36597418176400 = 13586902^2 + 6049580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201324134003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27650165516747 + ... + 27650165516754.

It is an arithmetic number, because the mean of its divisors is an integer number (64517052872419).

Almost surely, 2^{221201324134004} is an apocalyptic number.

It is an amenable number.

221201324134004 is a deficient number, since it is larger than the sum of its proper divisors (165900993100510).

221201324134004 is a wasteful number, since it uses less digits than its factorization.

221201324134004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55300331033505 (or 55300331033503 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 221201324134004 its reverse (400431423102122), we get a palindrome (621632747236126).

The spelling of 221201324134004 in words is "two hundred twenty-one trillion, two hundred one billion, three hundred twenty-four million, one hundred thirty-four thousand, four".