122021504 has 64 divisors (see below), whose sum is σ = 268790400. Its totient is φ = 54712320.

The previous prime is 122021503. The next prime is 122021507. The reversal of 122021504 is 405120221.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (122021503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110684 + ... + 111780.

It is an arithmetic number, because the mean of its divisors is an integer number (4199850).

Almost surely, 2^122021504 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 122021504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134395200).

122021504 is an abundant number, since it is smaller than the sum of its proper divisors (146768896).

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

122021504 is a wasteful number, since it uses less digits than its factorization.

122021504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 122021504 is about 11046.3344146373. The cubic root of 122021504 is about 495.9967047995.

Adding to 122021504 its reverse (405120221), we get a palindrome (527141725).

The spelling of 122021504 in words is "one hundred twenty-two million, twenty-one thousand, five hundred four".