122005331553 has 48 divisors (see below), whose sum is σ = 197717981184. Its totient is φ = 65541315840.

The previous prime is 122005331543. The next prime is 122005331563. The reversal of 122005331553 is 355133500221.

It is an interprime number because it is at equal distance from previous prime (122005331543) and next prime (122005331563).

It is not a de Polignac number, because 122005331553 - 2¹⁸ = 122005069409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122005331553.

It is not an unprimeable number, because it can be changed into a prime (122005331533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5517826 + ... + 5539892.

It is an arithmetic number, because the mean of its divisors is an integer number (4119124608).

Almost surely, 2^122005331553 is an apocalyptic number.

It is an amenable number.

122005331553 is a deficient number, since it is larger than the sum of its proper divisors (75712649631).

122005331553 is a wasteful number, since it uses less digits than its factorization.

122005331553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23022 (or 23005 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 122005331553 its reverse (355133500221), we get a palindrome (477138831774).

The spelling of 122005331553 in words is "one hundred twenty-two billion, five million, three hundred thirty-one thousand, five hundred fifty-three".