2011221012223 has 4 divisors (see below), whose sum is σ = 2011329259888. Its totient is φ = 2011112764560.

The previous prime is 2011221012187. The next prime is 2011221012259. The reversal of 2011221012223 is 3222101221102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2011221012187) and next prime (2011221012259).

It is a cyclic number.

It is not a de Polignac number, because 2011221012223 - 2¹³ = 2011221004031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011221012223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011221012523) 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, 54095958 + ... + 54133123.

It is an arithmetic number, because the mean of its divisors is an integer number (502832314972).

Almost surely, 2^{2011221012223} is an apocalyptic number.

2011221012223 is a deficient number, since it is larger than the sum of its proper divisors (108247665).

2011221012223 is a wasteful number, since it uses less digits than its factorization.

2011221012223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108247664.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2011221012223 its reverse (3222101221102), we get a palindrome (5233322233325).

The spelling of 2011221012223 in words is "two trillion, eleven billion, two hundred twenty-one million, twelve thousand, two hundred twenty-three".