121426345356 has 12 divisors (see below), whose sum is σ = 283328139192. Its totient is φ = 40475448448.

The previous prime is 121426345303. The next prime is 121426345363. The reversal of 121426345356 is 653543624121.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5059431045 + ... + 5059431068.

It is an arithmetic number, because the mean of its divisors is an integer number (23610678266).

Almost surely, 2^121426345356 is an apocalyptic number.

It is an amenable number.

121426345356 is an abundant number, since it is smaller than the sum of its proper divisors (161901793836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121426345356 is a wasteful number, since it uses less digits than its factorization.

121426345356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10118862120 (or 10118862118 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

Adding to 121426345356 its reverse (653543624121), we get a palindrome (774969969477).

The spelling of 121426345356 in words is "one hundred twenty-one billion, four hundred twenty-six million, three hundred forty-five thousand, three hundred fifty-six".