22101211211 has 4 divisors (see below), whose sum is σ = 22103744952. Its totient is φ = 22098677472.

The previous prime is 22101211189. The next prime is 22101211229. The reversal of 22101211211 is 11211210122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22101211211 - 2¹⁴ = 22101194827 is a prime.

It is a super-4 number, since 4×22101211211⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22101211291) 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, 1253741 + ... + 1271246.

It is an arithmetic number, because the mean of its divisors is an integer number (5525936238).

Almost surely, 2^22101211211 is an apocalyptic number.

22101211211 is a deficient number, since it is larger than the sum of its proper divisors (2533741).

22101211211 is an equidigital number, since it uses as much as digits as its factorization.

22101211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533740.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22101211211 its reverse (11211210122), we get a palindrome (33312421333).

The spelling of 22101211211 in words is "twenty-two billion, one hundred one million, two hundred eleven thousand, two hundred eleven".