121321440141 has 8 divisors (see below), whose sum is σ = 176467549344. Its totient is φ = 73528145520.

The previous prime is 121321440131. The next prime is 121321440169. The reversal of 121321440141 is 141044123121.

It is a happy number.

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

It is not a de Polignac number, because 121321440141 - 2¹⁵ = 121321407373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321440131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838203606 + ... + 1838203671.

It is an arithmetic number, because the mean of its divisors is an integer number (22058443668).

Almost surely, 2^121321440141 is an apocalyptic number.

121321440141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121321440141 is a deficient number, since it is larger than the sum of its proper divisors (55146109203).

121321440141 is a wasteful number, since it uses less digits than its factorization.

121321440141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676407291.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 121321440141 its reverse (141044123121), we get a palindrome (262365563262).

The spelling of 121321440141 in words is "one hundred twenty-one billion, three hundred twenty-one million, four hundred forty thousand, one hundred forty-one".