2011222001121 has 4 divisors (see below), whose sum is σ = 2681629334832. Its totient is φ = 1340814667412.

The previous prime is 2011222001081. The next prime is 2011222001123. The reversal of 2011222001121 is 1211002221102.

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 a cyclic number.

It is not a de Polignac number, because 2011222001121 - 2⁶ = 2011222001057 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011222001121.

It is not an unprimeable number, because it can be changed into a prime (2011222001123) 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, 335203666851 + ... + 335203666856.

It is an arithmetic number, because the mean of its divisors is an integer number (670407333708).

Almost surely, 2^{2011222001121} is an apocalyptic number.

It is an amenable number.

2011222001121 is a deficient number, since it is larger than the sum of its proper divisors (670407333711).

2011222001121 is an equidigital number, since it uses as much as digits as its factorization.

2011222001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670407333710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2011222001121 its reverse (1211002221102), we get a palindrome (3222224222223).

The spelling of 2011222001121 in words is "two trillion, eleven billion, two hundred twenty-two million, one thousand, one hundred twenty-one".