122521412 has 24 divisors (see below), whose sum is σ = 231936600. Its totient is φ = 56295936.

The previous prime is 122521403. The next prime is 122521417. The reversal of 122521412 is 214125221.

It can be written as a sum of positive squares in 4 ways, for example, as 48664576 + 73856836 = 6976^2 + 8594^2 .

It is a super-2 number, since 2×122521412² = 30022992796947488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122521417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6764 + ... + 17052.

It is an arithmetic number, because the mean of its divisors is an integer number (9664025).

Almost surely, 2^122521412 is an apocalyptic number.

It is an amenable number.

122521412 is a deficient number, since it is larger than the sum of its proper divisors (109415188).

122521412 is a wasteful number, since it uses less digits than its factorization.

122521412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535 (or 10533 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 122521412 is about 11068.9390638850. The cubic root of 122521412 is about 496.6731289541.

Adding to 122521412 its reverse (214125221), we get a palindrome (336646633).

The spelling of 122521412 in words is "one hundred twenty-two million, five hundred twenty-one thousand, four hundred twelve".