2011011223 has 16 divisors (see below), whose sum is σ = 2178259776. Its totient is φ = 1845596160.

The previous prime is 2011011221. The next prime is 2011011241. The reversal of 2011011223 is 3221101102.

It is a cyclic number.

It is not a de Polignac number, because 2011011223 - 2¹ = 2011011221 is a prime.

It is a super-2 number, since 2×2011011223² = 8088332278063911458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011011221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3107886 + ... + 3108532.

It is an arithmetic number, because the mean of its divisors is an integer number (136141236).

Almost surely, 2^2011011223 is an apocalyptic number.

2011011223 is a deficient number, since it is larger than the sum of its proper divisors (167248553).

2011011223 is a wasteful number, since it uses less digits than its factorization.

2011011223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2011011223 is about 44844.2997826926. The cubic root of 2011011223 is about 1262.2290313868.

Adding to 2011011223 its reverse (3221101102), we get a palindrome (5232112325).

The spelling of 2011011223 in words is "two billion, eleven million, eleven thousand, two hundred twenty-three".