12221101011211 has 16 divisors (see below), whose sum is σ = 12481708763520. Its totient is φ = 11963250956800.

The previous prime is 12221101011137. The next prime is 12221101011239. The reversal of 12221101011211 is 11211010112221.

It is a cyclic number.

It is not a de Polignac number, because 12221101011211 - 2³⁵ = 12186741272843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221101011271) 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, 142765455 + ... + 142851031.

It is an arithmetic number, because the mean of its divisors is an integer number (780106797720).

Almost surely, 2^{12221101011211} is an apocalyptic number.

12221101011211 is a deficient number, since it is larger than the sum of its proper divisors (260607752309).

12221101011211 is a wasteful number, since it uses less digits than its factorization.

12221101011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101654.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12221101011211 its reverse (11211010112221), we get a palindrome (23432111123432).

It can be divided in two parts, 122211010 and 11211, that added together give a palindrome (122222221).

The spelling of 12221101011211 in words is "twelve trillion, two hundred twenty-one billion, one hundred one million, eleven thousand, two hundred eleven".