122206520 has 16 divisors (see below), whose sum is σ = 274964760. Its totient is φ = 48882592.

The previous prime is 122206507. The next prime is 122206531. The reversal of 122206520 is 25602221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122206492 and 122206501.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1527542 + ... + 1527621.

Almost surely, 2^122206520 is an apocalyptic number.

122206520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122206520 is an abundant number, since it is smaller than the sum of its proper divisors (152758240).

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

122206520 is a wasteful number, since it uses less digits than its factorization.

122206520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055174 (or 3055170 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 122206520 is about 11054.7057853206. The cubic root of 122206520 is about 496.2472644178.

Adding to 122206520 its reverse (25602221), we get a palindrome (147808741).

The spelling of 122206520 in words is "one hundred twenty-two million, two hundred six thousand, five hundred twenty".