1220100111122 has 16 divisors (see below), whose sum is σ = 1832043882240. Its totient is φ = 609419075328.

The previous prime is 1220100111119. The next prime is 1220100111149. The reversal of 1220100111122 is 2211110010221.

It is a junction number, because it is equal to n+sod(n) for n = 1220100111097 and 1220100111106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9769778 + ... + 9893874.

It is an arithmetic number, because the mean of its divisors is an integer number (114502742640).

Almost surely, 2^{1220100111122} is an apocalyptic number.

1220100111122 is a deficient number, since it is larger than the sum of its proper divisors (611943771118).

1220100111122 is a wasteful number, since it uses less digits than its factorization.

1220100111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129145.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220100111122 its reverse (2211110010221), we get a palindrome (3431210121343).

The spelling of 1220100111122 in words is "one trillion, two hundred twenty billion, one hundred million, one hundred eleven thousand, one hundred twenty-two".