1121101021121 has 4 divisors (see below), whose sum is σ = 1131386351700. Its totient is φ = 1110815690544.

The previous prime is 1121101021109. The next prime is 1121101021219. The reversal of 1121101021121 is 1211201011211.

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 972906049600 + 148194971521 = 986360^2 + 384961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121101021121 - 2⁶ = 1121101021057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121101021096 and 1121101021105.

It is not an unprimeable number, because it can be changed into a prime (1121101021721) 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, 5142665126 + ... + 5142665343.

It is an arithmetic number, because the mean of its divisors is an integer number (282846587925).

Almost surely, 2^{1121101021121} is an apocalyptic number.

It is an amenable number.

1121101021121 is a deficient number, since it is larger than the sum of its proper divisors (10285330579).

1121101021121 is a wasteful number, since it uses less digits than its factorization.

1121101021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10285330578.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121101021121 its reverse (1211201011211), we get a palindrome (2332302032332).

The spelling of 1121101021121 in words is "one trillion, one hundred twenty-one billion, one hundred one million, twenty-one thousand, one hundred twenty-one".