12012011210 has 8 divisors (see below), whose sum is σ = 21621620196. Its totient is φ = 4804804480.

The previous prime is 12012011191. The next prime is 12012011287. The reversal of 12012011210 is 1211021021.

It can be written as a sum of positive squares in 2 ways, for example, as 11365478881 + 646532329 = 106609^2 + 25427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12012011191 and 12012011200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600600551 + ... + 600600570.

Almost surely, 2^12012011210 is an apocalyptic number.

12012011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012011210 is a deficient number, since it is larger than the sum of its proper divisors (9609608986).

12012011210 is a wasteful number, since it uses less digits than its factorization.

12012011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201201128.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12012011210 its reverse (1211021021), we get a palindrome (13223032231).

The spelling of 12012011210 in words is "twelve billion, twelve million, eleven thousand, two hundred ten".