1001111201121 has 4 divisors (see below), whose sum is σ = 1334814934832. Its totient is φ = 667407467412.

The previous prime is 1001111201099. The next prime is 1001111201131. The reversal of 1001111201121 is 1211021111001.

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 1001111201121 - 2⁵ = 1001111201089 is a prime.

It is a super-3 number, since 3×1001111201121³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001111201097 and 1001111201106.

It is not an unprimeable number, because it can be changed into a prime (1001111201131) 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, 166851866851 + ... + 166851866856.

It is an arithmetic number, because the mean of its divisors is an integer number (333703733708).

Almost surely, 2^{1001111201121} is an apocalyptic number.

It is an amenable number.

1001111201121 is a deficient number, since it is larger than the sum of its proper divisors (333703733711).

1001111201121 is an equidigital number, since it uses as much as digits as its factorization.

1001111201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333703733710.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1001111201121 its reverse (1211021111001), we get a palindrome (2212132312122).

The spelling of 1001111201121 in words is "one trillion, one billion, one hundred eleven million, two hundred one thousand, one hundred twenty-one".