12212510 has 8 divisors (see below), whose sum is σ = 21982536. Its totient is φ = 4885000.

The previous prime is 12212507. The next prime is 12212521. The reversal of 12212510 is 1521221.

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

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, 610616 + ... + 610635.

It is an arithmetic number, because the mean of its divisors is an integer number (2747817).

Almost surely, 2^12212510 is an apocalyptic number.

12212510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212510 is a deficient number, since it is larger than the sum of its proper divisors (9770026).

12212510 is a wasteful number, since it uses less digits than its factorization.

12212510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221258.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12212510 is about 3494.6401817641. The cubic root of 12212510 is about 230.2864106809.

Adding to 12212510 its reverse (1521221), we get a palindrome (13733731).

The spelling of 12212510 in words is "twelve million, two hundred twelve thousand, five hundred ten".