121210222211 has 16 divisors (see below), whose sum is σ = 133701469440. Its totient is φ = 109176590880.

The previous prime is 121210222181. The next prime is 121210222213. The reversal of 121210222211 is 112222012121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121210222211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121210222211.

It is not an unprimeable number, because it can be changed into a prime (121210222213) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 463226 + ... + 676016.

It is an arithmetic number, because the mean of its divisors is an integer number (8356341840).

Almost surely, 2^121210222211 is an apocalyptic number.

121210222211 is a deficient number, since it is larger than the sum of its proper divisors (12491247229).

121210222211 is a wasteful number, since it uses less digits than its factorization.

121210222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213866.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121210222211 its reverse (112222012121), we get a palindrome (233432234332).

The spelling of 121210222211 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, two hundred eleven".