121240141135 has 4 divisors (see below), whose sum is σ = 145488169368. Its totient is φ = 96992112904.

The previous prime is 121240141067. The next prime is 121240141163. The reversal of 121240141135 is 531141042121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121240141135 - 2³¹ = 119092657487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12124014109 + ... + 12124014118.

It is an arithmetic number, because the mean of its divisors is an integer number (36372042342).

Almost surely, 2^121240141135 is an apocalyptic number.

121240141135 is a deficient number, since it is larger than the sum of its proper divisors (24248028233).

121240141135 is an equidigital number, since it uses as much as digits as its factorization.

121240141135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24248028232.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 121240141135 its reverse (531141042121), we get a palindrome (652381183256).

The spelling of 121240141135 in words is "one hundred twenty-one billion, two hundred forty million, one hundred forty-one thousand, one hundred thirty-five".