22211011212209 has 4 divisors (see below), whose sum is σ = 22227824999460. Its totient is φ = 22194197424960.

The previous prime is 22211011212199. The next prime is 22211011212227. The reversal of 22211011212209 is 90221211011222.

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 17640394802209 + 4570616410000 = 4200047^2 + 2137900^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211011212209 - 2⁴ = 22211011212193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22211011212239) 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, 8406891644 + ... + 8406894285.

It is an arithmetic number, because the mean of its divisors is an integer number (5556956249865).

Almost surely, 2^{22211011212209} is an apocalyptic number.

It is an amenable number.

22211011212209 is a deficient number, since it is larger than the sum of its proper divisors (16813787251).

22211011212209 is a wasteful number, since it uses less digits than its factorization.

22211011212209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813787250.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 22211011212209 in words is "twenty-two trillion, two hundred eleven billion, eleven million, two hundred twelve thousand, two hundred nine".