22221222120011 has 4 divisors (see below), whose sum is σ = 22640490461952. Its totient is φ = 21801953778072.

The previous prime is 22221222119989. The next prime is 22221222120029. The reversal of 22221222120011 is 11002122212222.

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 22221222120011 - 2¹⁸ = 22221221857867 is a prime.

It is a super-2 number, since 2×22221222120011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221222123011) 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, 209634170891 + ... + 209634170996.

It is an arithmetic number, because the mean of its divisors is an integer number (5660122615488).

Almost surely, 2^{22221222120011} is an apocalyptic number.

22221222120011 is a deficient number, since it is larger than the sum of its proper divisors (419268341941).

22221222120011 is an equidigital number, since it uses as much as digits as its factorization.

22221222120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419268341940.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22221222120011 its reverse (11002122212222), we get a palindrome (33223344332233).

The spelling of 22221222120011 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, eleven".