12520022 has 16 divisors (see below), whose sum is σ = 19189872. Its totient is φ = 6124800.

The previous prime is 12520021. The next prime is 12520033. The reversal of 12520022 is 22002521.

It is a junction number, because it is equal to n+sod(n) for n = 12519979 and 12520006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520021) 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, 31022 + ... + 31422.

It is an arithmetic number, because the mean of its divisors is an integer number (1199367).

Almost surely, 2^12520022 is an apocalyptic number.

12520022 is a deficient number, since it is larger than the sum of its proper divisors (6669850).

12520022 is a wasteful number, since it uses less digits than its factorization.

12520022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 12520022 is about 3538.3643113733. The cubic root of 12520022 is about 232.2032874359.

Adding to 12520022 its reverse (22002521), we get a palindrome (34522543).

The spelling of 12520022 in words is "twelve million, five hundred twenty thousand, twenty-two".