122312221201255 has 4 divisors (see below), whose sum is σ = 146774665441512. Its totient is φ = 97849776961000.

The previous prime is 122312221201253. The next prime is 122312221201279. The reversal of 122312221201255 is 552102122213221.

It is a happy number.

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

It is not a de Polignac number, because 122312221201255 - 2¹ = 122312221201253 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 (122312221201253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12231222120121 + ... + 12231222120130.

It is an arithmetic number, because the mean of its divisors is an integer number (36693666360378).

Almost surely, 2^{122312221201255} is an apocalyptic number.

122312221201255 is a deficient number, since it is larger than the sum of its proper divisors (24462444240257).

122312221201255 is an equidigital number, since it uses as much as digits as its factorization.

122312221201255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24462444240256.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 122312221201255 its reverse (552102122213221), we get a palindrome (674414343414476).

The spelling of 122312221201255 in words is "one hundred twenty-two trillion, three hundred twelve billion, two hundred twenty-one million, two hundred one thousand, two hundred fifty-five".