12020121210 has 16 divisors (see below), whose sum is σ = 28848290976. Its totient is φ = 3205365648.

The previous prime is 12020121163. The next prime is 12020121227. The reversal of 12020121210 is 1212102021.

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, 200335324 + ... + 200335383.

It is an arithmetic number, because the mean of its divisors is an integer number (1803018186).

Almost surely, 2^12020121210 is an apocalyptic number.

12020121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020121210 is an abundant number, since it is smaller than the sum of its proper divisors (16828169766).

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

12020121210 is a wasteful number, since it uses less digits than its factorization.

12020121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400670717.

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

Adding to 12020121210 its reverse (1212102021), we get a palindrome (13232223231).

The spelling of 12020121210 in words is "twelve billion, twenty million, one hundred twenty-one thousand, two hundred ten".