12012212121010 has 16 divisors (see below), whose sum is σ = 21624425415000. Its totient is φ = 4804341826816.

The previous prime is 12012212120929. The next prime is 12012212121061. The reversal of 12012212121010 is 1012121221021.

It can be written as a sum of positive squares in 4 ways, for example, as 2315695671081 + 9696516449929 = 1521741^2 + 3113923^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67784785 + ... + 67961764.

Almost surely, 2^{12012212121010} is an apocalyptic number.

12012212121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012212121010 is a deficient number, since it is larger than the sum of its proper divisors (9612213293990).

12012212121010 is a wasteful number, since it uses less digits than its factorization.

12012212121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135755405.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12012212121010 its reverse (1012121221021), we get a palindrome (13024333342031).

The spelling of 12012212121010 in words is "twelve trillion, twelve billion, two hundred twelve million, one hundred twenty-one thousand, ten".