1000202011121 has 4 divisors (see below), whose sum is σ = 1000365422244. Its totient is φ = 1000038600000.

The previous prime is 1000202011097. The next prime is 1000202011163. The reversal of 1000202011121 is 1211102020001.

1000202011121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 190130009521 + 810072001600 = 436039^2 + 900040^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000202011121 - 2¹⁰ = 1000202010097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000202011181) 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, 81696380 + ... + 81708621.

It is an arithmetic number, because the mean of its divisors is an integer number (250091355561).

Almost surely, 2^{1000202011121} is an apocalyptic number.

It is an amenable number.

1000202011121 is a deficient number, since it is larger than the sum of its proper divisors (163411123).

1000202011121 is an equidigital number, since it uses as much as digits as its factorization.

1000202011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163411122.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000202011121 its reverse (1211102020001), we get a palindrome (2211304031122).

The spelling of 1000202011121 in words is "one trillion, two hundred two million, eleven thousand, one hundred twenty-one".