12121101010 has 96 divisors (see below), whose sum is σ = 23355682560. Its totient is φ = 4525113600.

The previous prime is 12121100933. The next prime is 12121101011. The reversal of 12121101010 is 1010112121.

12121101010 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 (10).

It is not an unprimeable number, because it can be changed into a prime (12121101011) 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, 44727175 + ... + 44727445.

It is an arithmetic number, because the mean of its divisors is an integer number (243288360).

Almost surely, 2^12121101010 is an apocalyptic number.

12121101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121101010 is a deficient number, since it is larger than the sum of its proper divisors (11234581550).

12121101010 is a wasteful number, since it uses less digits than its factorization.

12121101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12121101010 its reverse (1010112121), we get a palindrome (13131213131).

The spelling of 12121101010 in words is "twelve billion, one hundred twenty-one million, one hundred one thousand, ten".