12122221021210 has 32 divisors (see below), whose sum is σ = 21830642583552. Its totient is φ = 4846523483520.

The previous prime is 12122221021187. The next prime is 12122221021231. The reversal of 12122221021210 is 1212012222121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193561822 + ... + 193624438.

It is an arithmetic number, because the mean of its divisors is an integer number (682207580736).

Almost surely, 2^{12122221021210} is an apocalyptic number.

12122221021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12122221021210 is a deficient number, since it is larger than the sum of its proper divisors (9708421562342).

12122221021210 is a wasteful number, since it uses less digits than its factorization.

12122221021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71758.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12122221021210 its reverse (1212012222121), we get a palindrome (13334233243331).

The spelling of 12122221021210 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty-one thousand, two hundred ten".