12012020210 has 16 divisors (see below), whose sum is σ = 22759617600. Its totient is φ = 4551923376.

The previous prime is 12012020177. The next prime is 12012020233. The reversal of 12012020210 is 1202021021.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12012020191 and 12012020200.

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, 31610390 + ... + 31610769.

It is an arithmetic number, because the mean of its divisors is an integer number (1422476100).

Almost surely, 2^12012020210 is an apocalyptic number.

12012020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012020210 is a deficient number, since it is larger than the sum of its proper divisors (10747597390).

12012020210 is a wasteful number, since it uses less digits than its factorization.

12012020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63221185.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12012020210 its reverse (1202021021), we get a palindrome (13214041231).

The spelling of 12012020210 in words is "twelve billion, twelve million, twenty thousand, two hundred ten".