122001221111 has 24 divisors (see below), whose sum is σ = 160160282640. Its totient is φ = 91787740800.

The previous prime is 122001221077. The next prime is 122001221117. The reversal of 122001221111 is 111122100221.

It is not a de Polignac number, because 122001221111 - 2³⁴ = 104821351927 is a prime.

It is a super-2 number, since 2×122001221111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122001221117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3886910 + ... + 3918171.

It is an arithmetic number, because the mean of its divisors is an integer number (6673345110).

Almost surely, 2^122001221111 is an apocalyptic number.

122001221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122001221111 is a deficient number, since it is larger than the sum of its proper divisors (38159061529).

122001221111 is a wasteful number, since it uses less digits than its factorization.

122001221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805135 (or 7805128 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122001221111 its reverse (111122100221), we get a palindrome (233123321332).

The spelling of 122001221111 in words is "one hundred twenty-two billion, one million, two hundred twenty-one thousand, one hundred eleven".