12122212220210 has 8 divisors (see below), whose sum is σ = 21819981996396. Its totient is φ = 4848884888080.

The previous prime is 12122212220201. The next prime is 12122212220233. The reversal of 12122212220210 is 1202221222121.

It can be written as a sum of positive squares in 2 ways, for example, as 11978638674289 + 143573545921 = 3461017^2 + 378911^2 .

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

It is a super-2 number, since 2×12122212220210² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

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, 606110611001 + ... + 606110611020.

Almost surely, 2^{12122212220210} is an apocalyptic number.

12122212220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122212220210 is a deficient number, since it is larger than the sum of its proper divisors (9697769776186).

12122212220210 is a wasteful number, since it uses less digits than its factorization.

12122212220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212221222028.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12122212220210 its reverse (1202221222121), we get a palindrome (13324433442331).

The spelling of 12122212220210 in words is "twelve trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty thousand, two hundred ten".