122220011222111 has 32 divisors (see below), whose sum is σ = 137984641542720. Its totient is φ = 107309468032000.

The previous prime is 122220011222069. The next prime is 122220011222119. The reversal of 122220011222111 is 111222110022221.

It is a de Polignac number, because none of the positive numbers 2^k-122220011222111 is a prime.

It is a super-2 number, since 2×122220011222111² (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 (122220011222119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4187795 + ... + 16185723.

It is an arithmetic number, because the mean of its divisors is an integer number (4312020048210).

Almost surely, 2^{122220011222111} is an apocalyptic number.

122220011222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122220011222111 is a deficient number, since it is larger than the sum of its proper divisors (15764630320609).

122220011222111 is a wasteful number, since it uses less digits than its factorization.

122220011222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11998267.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122220011222111 its reverse (111222110022221), we get a palindrome (233442121244332).

The spelling of 122220011222111 in words is "one hundred twenty-two trillion, two hundred twenty billion, eleven million, two hundred twenty-two thousand, one hundred eleven".