12021112122210 has 24 divisors (see below), whose sum is σ = 31254891517980. Its totient is φ = 3205629899232.

The previous prime is 12021112122139. The next prime is 12021112122241. The reversal of 12021112122210 is 1222121112021.

12021112122210 is a `hidden beast` number, since 1 + 20 + 211 + 1 + 212 + 221 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11283572964609 + 737539157601 = 3359103^2 + 858801^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66783956145 + ... + 66783956324.

Almost surely, 2^{12021112122210} is an apocalyptic number.

12021112122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021112122210 is an abundant number, since it is smaller than the sum of its proper divisors (19233779395770).

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

12021112122210 is a wasteful number, since it uses less digits than its factorization.

12021112122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133567912482 (or 133567912479 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12021112122210 its reverse (1222121112021), we get a palindrome (13243233234231).

The spelling of 12021112122210 in words is "twelve trillion, twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, two hundred ten".