140013231221 has 4 divisors (see below), whose sum is σ = 140127715872. Its totient is φ = 139898746572.

The previous prime is 140013231209. The next prime is 140013231223. The reversal of 140013231221 is 122132310041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140013231221 - 2¹⁸ = 140012969077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140013231193 and 140013231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140013231223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57240491 + ... + 57242936.

It is an arithmetic number, because the mean of its divisors is an integer number (35031928968).

Almost surely, 2^140013231221 is an apocalyptic number.

It is an amenable number.

140013231221 is a deficient number, since it is larger than the sum of its proper divisors (114484651).

140013231221 is a wasteful number, since it uses less digits than its factorization.

140013231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114484650.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 140013231221 its reverse (122132310041), we get a palindrome (262145541262).

The spelling of 140013231221 in words is "one hundred forty billion, thirteen million, two hundred thirty-one thousand, two hundred twenty-one".