20121211122 has 8 divisors (see below), whose sum is σ = 40242422256. Its totient is φ = 6707070372.

The previous prime is 20121211087. The next prime is 20121211139. The reversal of 20121211122 is 22111212102.

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

20121211122 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676767588 + ... + 1676767599.

It is an arithmetic number, because the mean of its divisors is an integer number (5030302782).

Almost surely, 2^20121211122 is an apocalyptic number.

20121211122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20121211122 is a wasteful number, since it uses less digits than its factorization.

20121211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353535192.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20121211122 its reverse (22111212102), we get a palindrome (42232423224).

The spelling of 20121211122 in words is "twenty billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twenty-two".