12121102210 has 32 divisors (see below), whose sum is σ = 24938951040. Its totient is φ = 4155121152.

The previous prime is 12121102181. The next prime is 12121102211. The reversal of 12121102210 is 1220112121.

12121102210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12121102210² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12121102211) 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 15 ways as a sum of consecutive naturals, for example, 601681 + ... + 621499.

It is an arithmetic number, because the mean of its divisors is an integer number (779342220).

Almost surely, 2^12121102210 is an apocalyptic number.

12121102210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121102210 is an abundant number, since it is smaller than the sum of its proper divisors (12817848830).

12121102210 is a wasteful number, since it uses less digits than its factorization.

12121102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28570.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12121102210 its reverse (1220112121), we get a palindrome (13341214331).

The spelling of 12121102210 in words is "twelve billion, one hundred twenty-one million, one hundred two thousand, two hundred ten".