122111210222111 has 8 divisors (see below), whose sum is σ = 133212422959104. Its totient is φ = 111010029756120.

The previous prime is 122111210222047. The next prime is 122111210222129. The reversal of 122111210222111 is 111222012111221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122111210222111 - 2⁶ = 122111210222047 is a prime.

It is a super-2 number, since 2×122111210222111² (a number of 29 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 (122111210222171) 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 7 ways as a sum of consecutive naturals, for example, 213716 + ... + 15629078.

It is an arithmetic number, because the mean of its divisors is an integer number (16651552869888).

Almost surely, 2^{122111210222111} is an apocalyptic number.

122111210222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122111210222111 is a deficient number, since it is larger than the sum of its proper divisors (11101212736993).

122111210222111 is a wasteful number, since it uses less digits than its factorization.

122111210222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16135501.

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

Adding to 122111210222111 its reverse (111222012111221), we get a palindrome (233333222333332).

The spelling of 122111210222111 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred ten million, two hundred twenty-two thousand, one hundred eleven".