111210122122220 has 48 divisors (see below), whose sum is σ = 254785760052768. Its totient is φ = 40437904680960.

The previous prime is 111210122122213. The next prime is 111210122122279. The reversal of 111210122122220 is 22221221012111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111210122122192 and 111210122122201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9202979 + ... + 17524698.

It is an arithmetic number, because the mean of its divisors is an integer number (5308036667766).

Almost surely, 2^{111210122122220} is an apocalyptic number.

111210122122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210122122220 is an abundant number, since it is smaller than the sum of its proper divisors (143575637930548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111210122122220 is a wasteful number, since it uses less digits than its factorization.

111210122122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26746610 (or 26746608 counting only the distinct ones).

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

Adding to 111210122122220 its reverse (22221221012111), we get a palindrome (133431343134331).

The spelling of 111210122122220 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".