1201111112122 has 16 divisors (see below), whose sum is σ = 1808049307680. Its totient is φ = 598429122768.

The previous prime is 1201111112087. The next prime is 1201111112189. The reversal of 1201111112122 is 2212111111021.

It is a junction number, because it is equal to n+sod(n) for n = 1201111112096 and 1201111112105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896568 + ... + 2449324.

It is an arithmetic number, because the mean of its divisors is an integer number (113003081730).

Almost surely, 2^{1201111112122} is an apocalyptic number.

1201111112122 is a deficient number, since it is larger than the sum of its proper divisors (606938195558).

1201111112122 is a wasteful number, since it uses less digits than its factorization.

1201111112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556605.

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

Adding to 1201111112122 its reverse (2212111111021), we get a palindrome (3413222223143).

The spelling of 1201111112122 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty-two".