22121332011 has 8 divisors (see below), whose sum is σ = 32772343760. Its totient is φ = 14747554656.

The previous prime is 22121331961. The next prime is 22121332021. The reversal of 22121332011 is 11023312122.

It is not a de Polignac number, because 22121332011 - 2¹⁵ = 22121299243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121332021) 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 7 ways as a sum of consecutive naturals, for example, 409654270 + ... + 409654323.

It is an arithmetic number, because the mean of its divisors is an integer number (4096542970).

Almost surely, 2^22121332011 is an apocalyptic number.

22121332011 is a deficient number, since it is larger than the sum of its proper divisors (10651011749).

22121332011 is an equidigital number, since it uses as much as digits as its factorization.

22121332011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819308602 (or 819308596 counting only the distinct ones).

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

Adding to 22121332011 its reverse (11023312122), we get a palindrome (33144644133).

It can be divided in two parts, 2212133 and 2011, that added together give a square (2214144 = 1488²).

The spelling of 22121332011 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirty-two thousand, eleven".