2012121222211 has 16 divisors (see below), whose sum is σ = 2127418634880. Its totient is φ = 1900970406720.

The previous prime is 2012121222197. The next prime is 2012121222229. The reversal of 2012121222211 is 1122221212102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012121222211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012121222911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6045381 + ... + 6369526.

It is an arithmetic number, because the mean of its divisors is an integer number (132963664680).

Almost surely, 2^{2012121222211} is an apocalyptic number.

2012121222211 is a deficient number, since it is larger than the sum of its proper divisors (115297412669).

2012121222211 is a wasteful number, since it uses less digits than its factorization.

2012121222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12415074.

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

Adding to 2012121222211 its reverse (1122221212102), we get a palindrome (3134342434313).

The spelling of 2012121222211 in words is "two trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".