122221012211 has 4 divisors (see below), whose sum is σ = 124224635424. Its totient is φ = 120217389000.

The previous prime is 122221012189. The next prime is 122221012223. The reversal of 122221012211 is 112210122221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112210122221 = 193 ⋅581399597.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122221012211 is a prime.

It is a super-2 number, since 2×122221012211² (a number of 23 digits) contains 22 as substring.

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 122221012211.

It is not an unprimeable number, because it can be changed into a prime (122221012231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001811515 + ... + 1001811636.

It is an arithmetic number, because the mean of its divisors is an integer number (31056158856).

Almost surely, 2^122221012211 is an apocalyptic number.

122221012211 is a deficient number, since it is larger than the sum of its proper divisors (2003623213).

122221012211 is an equidigital number, since it uses as much as digits as its factorization.

122221012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003623212.

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

Adding to 122221012211 its reverse (112210122221), we get a palindrome (234431134432).

The spelling of 122221012211 in words is "one hundred twenty-two billion, two hundred twenty-one million, twelve thousand, two hundred eleven".