111122220121101 has 128 divisors (see below), whose sum is σ = 189841205882880. Its totient is φ = 62928573926400.

The previous prime is 111122220121097. The next prime is 111122220121103. The reversal of 111122220121101 is 101121022221111.

It is a happy number.

111122220121101 is a `hidden beast` number, since 111 + 122 + 220 + 1 + 211 + 0 + 1 = 666.

It is not a de Polignac number, because 111122220121101 - 2² = 111122220121097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122220121103) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9204186801 + ... + 9204198873.

It is an arithmetic number, because the mean of its divisors is an integer number (1483134420960).

Almost surely, 2^{111122220121101} is an apocalyptic number.

It is an amenable number.

111122220121101 is a deficient number, since it is larger than the sum of its proper divisors (78718985761779).

111122220121101 is a wasteful number, since it uses less digits than its factorization.

111122220121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13264 (or 13258 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111122220121101 its reverse (101121022221111), we get a palindrome (212243242342212).

The spelling of 111122220121101 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred one".