1112001220121 has 4 divisors (see below), whose sum is σ = 1213092240144. Its totient is φ = 1010910200100.

The previous prime is 1112001220091. The next prime is 1112001220181. The reversal of 1112001220121 is 1210221002111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112001220121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1112001220096 and 1112001220105.

It is not an unprimeable number, because it can be changed into a prime (1112001220181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50545509995 + ... + 50545510016.

It is an arithmetic number, because the mean of its divisors is an integer number (303273060036).

Almost surely, 2^{1112001220121} is an apocalyptic number.

1112001220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1112001220121 is a deficient number, since it is larger than the sum of its proper divisors (101091020023).

1112001220121 is a wasteful number, since it uses less digits than its factorization.

1112001220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101091020022.

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

Adding to 1112001220121 its reverse (1210221002111), we get a palindrome (2322222222232).

The spelling of 1112001220121 in words is "one trillion, one hundred twelve billion, one million, two hundred twenty thousand, one hundred twenty-one".