2011111122201 has 4 divisors (see below), whose sum is σ = 2681481496272. Its totient is φ = 1340740748132.

The previous prime is 2011111122187. The next prime is 2011111122211. The reversal of 2011111122201 is 1022211111102.

It is a happy number.

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 2011111122201 - 2²³ = 2011102733593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011111122211) 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, 335185187031 + ... + 335185187036.

It is an arithmetic number, because the mean of its divisors is an integer number (670370374068).

Almost surely, 2^{2011111122201} is an apocalyptic number.

It is an amenable number.

2011111122201 is a deficient number, since it is larger than the sum of its proper divisors (670370374071).

2011111122201 is an equidigital number, since it uses as much as digits as its factorization.

2011111122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670370374070.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2011111122201 its reverse (1022211111102), we get a palindrome (3033322233303).

It can be divided in two parts, 2011111 and 122201, that added together give a palindrome (2133312).

The spelling of 2011111122201 in words is "two trillion, eleven billion, one hundred eleven million, one hundred twenty-two thousand, two hundred one".