140121532253221 has 8 divisors (see below), whose sum is σ = 145842593338080. Its totient is φ = 134459756775792.

The previous prime is 140121532253141. The next prime is 140121532253243. The reversal of 140121532253221 is 122352235121041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140121532253221 - 2⁷ = 140121532253093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140121532253621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14821397035 + ... + 14821406488.

It is an arithmetic number, because the mean of its divisors is an integer number (18230324167260).

Almost surely, 2^{140121532253221} is an apocalyptic number.

It is an amenable number.

140121532253221 is a deficient number, since it is larger than the sum of its proper divisors (5721061084859).

140121532253221 is a wasteful number, since it uses less digits than its factorization.

140121532253221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29642803715.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 140121532253221 its reverse (122352235121041), we get a palindrome (262473767374262).

The spelling of 140121532253221 in words is "one hundred forty trillion, one hundred twenty-one billion, five hundred thirty-two million, two hundred fifty-three thousand, two hundred twenty-one".