22221121011101 has 4 divisors (see below), whose sum is σ = 22244836189212. Its totient is φ = 22197405832992.

The previous prime is 22221121011083. The next prime is 22221121011191. The reversal of 22221121011101 is 10111012112222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9941345940100 + 12279775071001 = 3152990^2 + 3504251^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221121011101 - 2²² = 22221116816797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221121011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221121011191) 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, 11857587650 + ... + 11857589523.

It is an arithmetic number, because the mean of its divisors is an integer number (5561209047303).

Almost surely, 2^{22221121011101} is an apocalyptic number.

It is an amenable number.

22221121011101 is a deficient number, since it is larger than the sum of its proper divisors (23715178111).

22221121011101 is an equidigital number, since it uses as much as digits as its factorization.

22221121011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23715178110.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22221121011101 its reverse (10111012112222), we get a palindrome (32332133123323).

The spelling of 22221121011101 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, eleven thousand, one hundred one".