22021322212111 has 4 divisors (see below), whose sum is σ = 22022239065400. Its totient is φ = 22020405358824.

The previous prime is 22021322212081. The next prime is 22021322212129. The reversal of 22021322212111 is 11121222312022.

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 22021322212111 - 2⁵ = 22021322212079 is a prime.

It is a super-2 number, since 2×22021322212111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021322212171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458390616 + ... + 458438653.

It is an arithmetic number, because the mean of its divisors is an integer number (5505559766350).

Almost surely, 2^{22021322212111} is an apocalyptic number.

22021322212111 is a deficient number, since it is larger than the sum of its proper divisors (916853289).

22021322212111 is an equidigital number, since it uses as much as digits as its factorization.

22021322212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916853288.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 22021322212111 its reverse (11121222312022), we get a palindrome (33142544524133).

The spelling of 22021322212111 in words is "twenty-two trillion, twenty-one billion, three hundred twenty-two million, two hundred twelve thousand, one hundred eleven".