122555225435421 has 4 divisors (see below), whose sum is σ = 163406967247232. Its totient is φ = 81703483623612.

The previous prime is 122555225435413. The next prime is 122555225435471. The reversal of 122555225435421 is 124534522555221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 122555225435421 - 2³ = 122555225435413 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 (122555225435471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20425870905901 + ... + 20425870905906.

It is an arithmetic number, because the mean of its divisors is an integer number (40851741811808).

Almost surely, 2^{122555225435421} is an apocalyptic number.

It is an amenable number.

122555225435421 is a deficient number, since it is larger than the sum of its proper divisors (40851741811811).

122555225435421 is an equidigital number, since it uses as much as digits as its factorization.

122555225435421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40851741811810.

The product of its digits is 4800000, while the sum is 48.

The spelling of 122555225435421 in words is "one hundred twenty-two trillion, five hundred fifty-five billion, two hundred twenty-five million, four hundred thirty-five thousand, four hundred twenty-one".