122521145 has 8 divisors (see below), whose sum is σ = 151768320. Its totient is φ = 94854960.

The previous prime is 122521141. The next prime is 122521153. The reversal of 122521145 is 541125221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122521145 - 2² = 122521141 is a prime.

It is a super-2 number, since 2×122521145² = 30022861944222050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122521145.

It is not an unprimeable number, because it can be changed into a prime (122521141) 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, 395075 + ... + 395384.

It is an arithmetic number, because the mean of its divisors is an integer number (18971040).

Almost surely, 2^122521145 is an apocalyptic number.

It is an amenable number.

122521145 is a deficient number, since it is larger than the sum of its proper divisors (29247175).

122521145 is an equidigital number, since it uses as much as digits as its factorization.

122521145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790495.

The product of its digits is 800, while the sum is 23.

The square root of 122521145 is about 11068.9270031020. The cubic root of 122521145 is about 496.6727681687.

Adding to 122521145 its reverse (541125221), we get a palindrome (663646366).

The spelling of 122521145 in words is "one hundred twenty-two million, five hundred twenty-one thousand, one hundred forty-five".