1112211120121 has 4 divisors (see below), whose sum is σ = 1112215090932. Its totient is φ = 1112207149312.

The previous prime is 1112211120113. The next prime is 1112211120133. The reversal of 1112211120121 is 1210211122111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211610120121 + 900601000000 = 460011^2 + 949000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112211120121 - 2³ = 1112211120113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112211120095 and 1112211120104.

It is not an unprimeable number, because it can be changed into a prime (1112211120521) 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, 1530520 + ... + 2137033.

It is an arithmetic number, because the mean of its divisors is an integer number (278053772733).

Almost surely, 2^{1112211120121} is an apocalyptic number.

It is an amenable number.

1112211120121 is a deficient number, since it is larger than the sum of its proper divisors (3970811).

1112211120121 is an equidigital number, since it uses as much as digits as its factorization.

1112211120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3970810.

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

Adding to 1112211120121 its reverse (1210211122111), we get a palindrome (2322422242232).

The spelling of 1112211120121 in words is "one trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty-one".