12122120210 has 16 divisors (see below), whose sum is σ = 21821192856. Its totient is φ = 4848542208.

The previous prime is 12122120159. The next prime is 12122120221. The reversal of 12122120210 is 1202122121.

It can be written as a sum of positive squares in 4 ways, for example, as 12084824761 + 37295449 = 109931^2 + 6107^2 .

It is a Curzon number.

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, 197312 + ... + 251348.

Almost surely, 2^12122120210 is an apocalyptic number.

12122120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122120210 is a deficient number, since it is larger than the sum of its proper divisors (9699072646).

12122120210 is a wasteful number, since it uses less digits than its factorization.

12122120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76477.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12122120210 its reverse (1202122121), we get a palindrome (13324242331).

The spelling of 12122120210 in words is "twelve billion, one hundred twenty-two million, one hundred twenty thousand, two hundred ten".