121340422255 has 16 divisors (see below), whose sum is σ = 160455889440. Its totient is φ = 87521390208.

The previous prime is 121340422253. The next prime is 121340422267. The reversal of 121340422255 is 552224043121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121340422255 - 2¹ = 121340422253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340422253) 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 15 ways as a sum of consecutive naturals, for example, 21703900 + ... + 21709489.

It is an arithmetic number, because the mean of its divisors is an integer number (10028493090).

Almost surely, 2^121340422255 is an apocalyptic number.

121340422255 is a deficient number, since it is larger than the sum of its proper divisors (39115467185).

121340422255 is a wasteful number, since it uses less digits than its factorization.

121340422255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43413450.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 121340422255 its reverse (552224043121), we get a palindrome (673564465376).

The spelling of 121340422255 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-two thousand, two hundred fifty-five".