1111222000121 has 16 divisors (see below), whose sum is σ = 1128505125888. Its totient is φ = 1094066208000.

The previous prime is 1111222000117. The next prime is 1111222000123. The reversal of 1111222000121 is 1210002221111.

It is a cyclic number.

It is not a de Polignac number, because 1111222000121 - 2² = 1111222000117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111222000096 and 1111222000105.

It is not an unprimeable number, because it can be changed into a prime (1111222000123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 63902390 + ... + 63919776.

It is an arithmetic number, because the mean of its divisors is an integer number (70531570368).

Almost surely, 2^{1111222000121} is an apocalyptic number.

It is an amenable number.

1111222000121 is a deficient number, since it is larger than the sum of its proper divisors (17283125767).

1111222000121 is a wasteful number, since it uses less digits than its factorization.

1111222000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992.

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

Adding to 1111222000121 its reverse (1210002221111), we get a palindrome (2321224221232).

The spelling of 1111222000121 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.