122215552 has 32 divisors (see below), whose sum is σ = 244800000. Its totient is φ = 60775680.

The previous prime is 122215523. The next prime is 122215553. The reversal of 122215552 is 255512221.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (122215553) 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 3 ways as a sum of consecutive naturals, for example, 21949 + ... + 26947.

It is an arithmetic number, because the mean of its divisors is an integer number (7650000).

Almost surely, 2^122215552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122215552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122400000).

122215552 is an abundant number, since it is smaller than the sum of its proper divisors (122584448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122215552 is an equidigital number, since it uses as much as digits as its factorization.

122215552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204 (or 5192 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 122215552 is about 11055.1142915847. The cubic root of 122215552 is about 496.2594896108.

Adding to 122215552 its reverse (255512221), we get a palindrome (377727773).

The spelling of 122215552 in words is "one hundred twenty-two million, two hundred fifteen thousand, five hundred fifty-two".