122102212112111 has 24 divisors (see below), whose sum is σ = 155130130442880. Its totient is φ = 95033818479600.

The previous prime is 122102212112099. The next prime is 122102212112131. The reversal of 122102212112111 is 111211212201221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-122102212112111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122102212112131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131396555 + ... + 132322556.

It is an arithmetic number, because the mean of its divisors is an integer number (6463755435120).

Almost surely, 2^{122102212112111} is an apocalyptic number.

122102212112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122102212112111 is a deficient number, since it is larger than the sum of its proper divisors (33027918330769).

122102212112111 is a wasteful number, since it uses less digits than its factorization.

122102212112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263719995 (or 263719988 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 122102212112111 its reverse (111211212201221), we get a palindrome (233313424313332).

The spelling of 122102212112111 in words is "one hundred twenty-two trillion, one hundred two billion, two hundred twelve million, one hundred twelve thousand, one hundred eleven".