122201011112111 has 4 divisors (see below), whose sum is σ = 127514098551792. Its totient is φ = 116887923672432.

The previous prime is 122201011112087. The next prime is 122201011112129. The reversal of 122201011112111 is 111211110102221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122201011112111 is a prime.

It is a super-2 number, since 2×122201011112111² (a number of 29 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 122201011112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122201011112711) 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, 2656543719806 + ... + 2656543719851.

It is an arithmetic number, because the mean of its divisors is an integer number (31878524637948).

Almost surely, 2^{122201011112111} is an apocalyptic number.

122201011112111 is a deficient number, since it is larger than the sum of its proper divisors (5313087439681).

122201011112111 is an equidigital number, since it uses as much as digits as its factorization.

122201011112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313087439680.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 122201011112111 its reverse (111211110102221), we get a palindrome (233412121214332).

The spelling of 122201011112111 in words is "one hundred twenty-two trillion, two hundred one billion, eleven million, one hundred twelve thousand, one hundred eleven".