12021012210 has 32 divisors (see below), whose sum is σ = 28865092032. Its totient is φ = 3203974080.

The previous prime is 12021012193. The next prime is 12021012253. The reversal of 12021012210 is 1221012021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41221 + ... + 160440.

It is an arithmetic number, because the mean of its divisors is an integer number (902034126).

Almost surely, 2^12021012210 is an apocalyptic number.

12021012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021012210 is an abundant number, since it is smaller than the sum of its proper divisors (16844079822).

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

12021012210 is a wasteful number, since it uses less digits than its factorization.

12021012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203658.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12021012210 its reverse (1221012021), we get a palindrome (13242024231).

The spelling of 12021012210 in words is "twelve billion, twenty-one million, twelve thousand, two hundred ten".