12221312410 has 32 divisors (see below), whose sum is σ = 23328929232. Its totient is φ = 4593745920.

The previous prime is 12221312401. The next prime is 12221312479. The reversal of 12221312410 is 1421312221.

It can be written as a sum of positive squares in 8 ways, for example, as 10277296129 + 1944016281 = 101377^2 + 44091^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52894 + ... + 165046.

Almost surely, 2^12221312410 is an apocalyptic number.

12221312410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221312410 is a deficient number, since it is larger than the sum of its proper divisors (11107616822).

12221312410 is a wasteful number, since it uses less digits than its factorization.

12221312410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112818.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12221312410 its reverse (1421312221), we get a palindrome (13642624631).

The spelling of 12221312410 in words is "twelve billion, two hundred twenty-one million, three hundred twelve thousand, four hundred ten".