121150231423 has 16 divisors (see below), whose sum is σ = 138616238880. Its totient is φ = 105056493696.

The previous prime is 121150231409. The next prime is 121150231429. The reversal of 121150231423 is 324132051121.

It is a cyclic number.

It is not a de Polignac number, because 121150231423 - 2⁹ = 121150230911 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 (121150231429) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4328665 + ... + 4356562.

It is an arithmetic number, because the mean of its divisors is an integer number (8663514930).

Almost surely, 2^121150231423 is an apocalyptic number.

121150231423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121150231423 is a deficient number, since it is larger than the sum of its proper divisors (17466007457).

121150231423 is a wasteful number, since it uses less digits than its factorization.

121150231423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8685306.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 121150231423 its reverse (324132051121), we get a palindrome (445282282544).

The spelling of 121150231423 in words is "one hundred twenty-one billion, one hundred fifty million, two hundred thirty-one thousand, four hundred twenty-three".