122220553 has 24 divisors (see below), whose sum is σ = 153851208. Its totient is φ = 96235776.

The previous prime is 122220547. The next prime is 122220557. The reversal of 122220553 is 355022221.

It can be written as a sum of positive squares in 4 ways, for example, as 30118144 + 92102409 = 5488^2 + 9597^2 .

It is not a de Polignac number, because 122220553 - 2⁹ = 122220041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122220557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199075 + ... + 199687.

It is an arithmetic number, because the mean of its divisors is an integer number (6410467).

Almost surely, 2^122220553 is an apocalyptic number.

122220553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

122220553 is a deficient number, since it is larger than the sum of its proper divisors (31630655).

122220553 is a wasteful number, since it uses less digits than its factorization.

122220553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 122220553 is about 11055.3404741781. The cubic root of 122220553 is about 496.2662584162.

Adding to 122220553 its reverse (355022221), we get a palindrome (477242774).

The spelling of 122220553 in words is "one hundred twenty-two million, two hundred twenty thousand, five hundred fifty-three".