122510421 has 16 divisors (see below), whose sum is σ = 197997120. Its totient is φ = 74248560.

The previous prime is 122510411. The next prime is 122510431. The reversal of 122510421 is 124015221.

It is an interprime number because it is at equal distance from previous prime (122510411) and next prime (122510431).

It is not a de Polignac number, because 122510421 - 2⁵ = 122510389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122510394 and 122510403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122510411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205950 + ... + 206543.

It is an arithmetic number, because the mean of its divisors is an integer number (12374820).

Almost surely, 2^122510421 is an apocalyptic number.

122510421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122510421 is a deficient number, since it is larger than the sum of its proper divisors (75486699).

122510421 is a wasteful number, since it uses less digits than its factorization.

122510421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412513 (or 412507 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 122510421 is about 11068.4425733705. The cubic root of 122510421 is about 496.6582768628.

Adding to 122510421 its reverse (124015221), we get a palindrome (246525642).

The spelling of 122510421 in words is "one hundred twenty-two million, five hundred ten thousand, four hundred twenty-one".