22212021011 has 4 divisors (see below), whose sum is σ = 22977952800. Its totient is φ = 21446089224.

The previous prime is 22212020993. The next prime is 22212021019. The reversal of 22212021011 is 11012021222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11012021222 = 2 ⋅5506010611.

It is a cyclic number.

It is not a de Polignac number, because 22212021011 - 2⁶ = 22212020947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22212021019) 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 3 ways as a sum of consecutive naturals, for example, 382965851 + ... + 382965908.

It is an arithmetic number, because the mean of its divisors is an integer number (5744488200).

Almost surely, 2^22212021011 is an apocalyptic number.

22212021011 is a deficient number, since it is larger than the sum of its proper divisors (765931789).

22212021011 is an equidigital number, since it uses as much as digits as its factorization.

22212021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765931788.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22212021011 its reverse (11012021222), we get a palindrome (33224042233).

The spelling of 22212021011 in words is "twenty-two billion, two hundred twelve million, twenty-one thousand, eleven".