22123213011 has 6 divisors (see below), whose sum is σ = 31955752140. Its totient is φ = 14748808668.

The previous prime is 22123212971. The next prime is 22123213031. The reversal of 22123213011 is 11031232122.

It is not a de Polignac number, because 22123213011 - 2⁹ = 22123212499 is a prime.

It is a super-2 number, since 2×22123213011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22123213031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1229067381 + ... + 1229067398.

It is an arithmetic number, because the mean of its divisors is an integer number (5325958690).

Almost surely, 2^22123213011 is an apocalyptic number.

22123213011 is a deficient number, since it is larger than the sum of its proper divisors (9832539129).

22123213011 is a wasteful number, since it uses less digits than its factorization.

22123213011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458134785 (or 2458134782 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22123213011 its reverse (11031232122), we get a palindrome (33154445133).

The spelling of 22123213011 in words is "twenty-two billion, one hundred twenty-three million, two hundred thirteen thousand, eleven".