140104401234221 has 4 divisors (see below), whose sum is σ = 140552019129852. Its totient is φ = 139656783338592.

The previous prime is 140104401234197. The next prime is 140104401234283. The reversal of 140104401234221 is 122432104401041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14552622744100 + 125551778490121 = 3814790^2 + 11204989^2 .

It is a cyclic number.

It is not a de Polignac number, because 140104401234221 - 2¹⁰ = 140104401233197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140104401234821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223808947346 + ... + 223808947971.

It is an arithmetic number, because the mean of its divisors is an integer number (35138004782463).

Almost surely, 2^{140104401234221} is an apocalyptic number.

It is an amenable number.

140104401234221 is a deficient number, since it is larger than the sum of its proper divisors (447617895631).

140104401234221 is an equidigital number, since it uses as much as digits as its factorization.

140104401234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447617895630.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 140104401234221 its reverse (122432104401041), we get a palindrome (262536505635262).

The spelling of 140104401234221 in words is "one hundred forty trillion, one hundred four billion, four hundred one million, two hundred thirty-four thousand, two hundred twenty-one".