20121212102211 has 48 divisors (see below), whose sum is σ = 32733563885568. Its totient is φ = 11802966926400.

The previous prime is 20121212102207. The next prime is 20121212102219. The reversal of 20121212102211 is 11220121212102.

20121212102211 is a `hidden beast` number, since 20 + 1 + 212 + 1 + 210 + 221 + 1 = 666.

It is not a de Polignac number, because 20121212102211 - 2² = 20121212102207 is a prime.

It is a super-2 number, since 2×20121212102211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20121212102219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13680201 + ... + 15079466.

It is an arithmetic number, because the mean of its divisors is an integer number (681949247616).

Almost surely, 2^{20121212102211} is an apocalyptic number.

20121212102211 is a deficient number, since it is larger than the sum of its proper divisors (12612351783357).

20121212102211 is a wasteful number, since it uses less digits than its factorization.

20121212102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28759912 (or 28759909 counting only the distinct ones).

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

Adding to 20121212102211 its reverse (11220121212102), we get a palindrome (31341333314313).

The spelling of 20121212102211 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred two thousand, two hundred eleven".