1100001120121 has 4 divisors (see below), whose sum is σ = 1100005312500. Its totient is φ = 1099996927744.

The previous prime is 1100001120061. The next prime is 1100001120149. The reversal of 1100001120121 is 1210211000011.

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 157558188096 + 942442932025 = 396936^2 + 970795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100001120121 - 2¹⁷ = 1100000989049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100001120098 and 1100001120107.

It is not an unprimeable number, because it can be changed into a prime (1100001120821) 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, 1674316 + ... + 2236813.

It is an arithmetic number, because the mean of its divisors is an integer number (275001328125).

Almost surely, 2^{1100001120121} is an apocalyptic number.

It is an amenable number.

1100001120121 is a deficient number, since it is larger than the sum of its proper divisors (4192379).

1100001120121 is an equidigital number, since it uses as much as digits as its factorization.

1100001120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192378.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1100001120121 its reverse (1210211000011), we get a palindrome (2310212120132).

The spelling of 1100001120121 in words is "one trillion, one hundred billion, one million, one hundred twenty thousand, one hundred twenty-one".