122421503155 has 16 divisors (see below), whose sum is σ = 167938608384. Its totient is φ = 83923043040.

The previous prime is 122421503153. The next prime is 122421503179. The reversal of 122421503155 is 551305124221.

It is not a de Polignac number, because 122421503155 - 2¹ = 122421503153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122421503153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352561 + ... + 607570.

It is an arithmetic number, because the mean of its divisors is an integer number (10496163024).

Almost surely, 2^122421503155 is an apocalyptic number.

122421503155 is a deficient number, since it is larger than the sum of its proper divisors (45517105229).

122421503155 is an equidigital number, since it uses as much as digits as its factorization.

122421503155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963786.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 122421503155 its reverse (551305124221), we get a palindrome (673726627376).

The spelling of 122421503155 in words is "one hundred twenty-two billion, four hundred twenty-one million, five hundred three thousand, one hundred fifty-five".