140012320121 has 4 divisors (see below), whose sum is σ = 140064507792. Its totient is φ = 139960132452.

The previous prime is 140012320087. The next prime is 140012320141. The reversal of 140012320121 is 121023210041.

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 140012320121 - 2²⁶ = 139945211257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140012320121.

It is not an unprimeable number, because it can be changed into a prime (140012320141) 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, 26089811 + ... + 26095176.

It is an arithmetic number, because the mean of its divisors is an integer number (35016126948).

Almost surely, 2^140012320121 is an apocalyptic number.

It is an amenable number.

140012320121 is a deficient number, since it is larger than the sum of its proper divisors (52187671).

140012320121 is an equidigital number, since it uses as much as digits as its factorization.

140012320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52187670.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 140012320121 its reverse (121023210041), we get a palindrome (261035530162).

The spelling of 140012320121 in words is "one hundred forty billion, twelve million, three hundred twenty thousand, one hundred twenty-one".