22012123011 has 16 divisors (see below), whose sum is σ = 29446913664. Its totient is φ = 14626078784.

The previous prime is 22012122943. The next prime is 22012123013. The reversal of 22012123011 is 11032121022.

It is a cyclic number.

It is not a de Polignac number, because 22012123011 - 2¹³ = 22012114819 is a prime.

It is a super-2 number, since 2×22012123011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22012123013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4456135 + ... + 4461071.

It is an arithmetic number, because the mean of its divisors is an integer number (1840432104).

Almost surely, 2^22012123011 is an apocalyptic number.

22012123011 is a deficient number, since it is larger than the sum of its proper divisors (7434790653).

22012123011 is a wasteful number, since it uses less digits than its factorization.

22012123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22012123011 its reverse (11032121022), we get a palindrome (33044244033).

It can be divided in two parts, 2201 and 2123011, that added together give a palindrome (2125212).

The spelling of 22012123011 in words is "twenty-two billion, twelve million, one hundred twenty-three thousand, eleven".