12121222410 has 96 divisors (see below), whose sum is σ = 35875052928. Its totient is φ = 2810712960.

The previous prime is 12121222369. The next prime is 12121222417. The reversal of 12121222410 is 1422212121.

12121222410 is a `hidden beast` number, since 1 + 21 + 212 + 22 + 410 = 666.

12121222410 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12121222417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 243397 + ... + 288936.

It is an arithmetic number, because the mean of its divisors is an integer number (373698468).

Almost surely, 2^12121222410 is an apocalyptic number.

12121222410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121222410 is an abundant number, since it is smaller than the sum of its proper divisors (23753830518).

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

12121222410 is a wasteful number, since it uses less digits than its factorization.

12121222410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532380 (or 532377 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12121222410 its reverse (1422212121), we get a palindrome (13543434531).

The spelling of 12121222410 in words is "twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, four hundred ten".