2011332112221 has 4 divisors (see below), whose sum is σ = 2681776149632. Its totient is φ = 1340888074812.

The previous prime is 2011332112211. The next prime is 2011332112247. The reversal of 2011332112221 is 1222112331102.

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 2011332112221 - 2⁵ = 2011332112189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011332112211) 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, 335222018701 + ... + 335222018706.

It is an arithmetic number, because the mean of its divisors is an integer number (670444037408).

Almost surely, 2^{2011332112221} is an apocalyptic number.

It is an amenable number.

2011332112221 is a deficient number, since it is larger than the sum of its proper divisors (670444037411).

2011332112221 is an equidigital number, since it uses as much as digits as its factorization.

2011332112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670444037410.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2011332112221 its reverse (1222112331102), we get a palindrome (3233444443323).

The spelling of 2011332112221 in words is "two trillion, eleven billion, three hundred thirty-two million, one hundred twelve thousand, two hundred twenty-one".