12111212010 has 16 divisors (see below), whose sum is σ = 29066908896. Its totient is φ = 3229656528.

The previous prime is 12111211951. The next prime is 12111212093. The reversal of 12111212010 is 1021211121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201853504 + ... + 201853563.

It is an arithmetic number, because the mean of its divisors is an integer number (1816681806).

Almost surely, 2^12111212010 is an apocalyptic number.

12111212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111212010 is an abundant number, since it is smaller than the sum of its proper divisors (16955696886).

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

12111212010 is a wasteful number, since it uses less digits than its factorization.

12111212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403707077.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12111212010 its reverse (1021211121), we get a palindrome (13132423131).

The spelling of 12111212010 in words is "twelve billion, one hundred eleven million, two hundred twelve thousand, ten".