1112121012121 has 4 divisors (see below), whose sum is σ = 1270995442432. Its totient is φ = 953246581812.

The previous prime is 1112121012103. The next prime is 1112121012143. The reversal of 1112121012121 is 1212101212111.

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 not a de Polignac number, because 1112121012121 - 2⁹ = 1112121011609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112121012095 and 1112121012104.

It is not an unprimeable number, because it can be changed into a prime (1112121012181) 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, 79437215145 + ... + 79437215158.

It is an arithmetic number, because the mean of its divisors is an integer number (317748860608).

Almost surely, 2^{1112121012121} is an apocalyptic number.

It is an amenable number.

1112121012121 is a deficient number, since it is larger than the sum of its proper divisors (158874430311).

1112121012121 is an equidigital number, since it uses as much as digits as its factorization.

1112121012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158874430310.

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

Adding to 1112121012121 its reverse (1212101212111), we get a palindrome (2324222224232).

It can be divided in two parts, 11 and 12121012121, that multiplied together give a palindrome (133331133331).

The spelling of 1112121012121 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, twelve thousand, one hundred twenty-one".