122521245 has 128 divisors (see below), whose sum is σ = 260554752. Its totient is φ = 47692800.

The previous prime is 122521241. The next prime is 122521271. The reversal of 122521245 is 542125221.

It is not a de Polignac number, because 122521245 - 2² = 122521241 is a prime.

It is a super-2 number, since 2×122521245² = 30022910952700050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122521241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2008515 + ... + 2008575.

It is an arithmetic number, because the mean of its divisors is an integer number (2035584).

Almost surely, 2^122521245 is an apocalyptic number.

122521245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122521245 is an abundant number, since it is smaller than the sum of its proper divisors (138033507).

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

122521245 is a wasteful number, since it uses less digits than its factorization.

122521245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171.

The product of its digits is 1600, while the sum is 24.

The square root of 122521245 is about 11068.9315202507. The cubic root of 122521245 is about 496.6729032944.

Adding to 122521245 its reverse (542125221), we get a palindrome (664646466).

The spelling of 122521245 in words is "one hundred twenty-two million, five hundred twenty-one thousand, two hundred forty-five".