22222110222001 has 4 divisors (see below), whose sum is σ = 22222128419172. Its totient is φ = 22222092024832.

The previous prime is 22222110221963. The next prime is 22222110222017. The reversal of 22222110222001 is 10022201122222.

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 10439367462001 + 11782742760000 = 3231001^2 + 3432600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22222110222001 is a prime.

It is a super-3 number, since 3×22222110222001³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 22222110222001.

It is not an unprimeable number, because it can be changed into a prime (22222110222031) 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, 7123960 + ... + 9756793.

It is an arithmetic number, because the mean of its divisors is an integer number (5555532104793).

Almost surely, 2^{22222110222001} is an apocalyptic number.

It is an amenable number.

22222110222001 is a deficient number, since it is larger than the sum of its proper divisors (18197171).

22222110222001 is a wasteful number, since it uses less digits than its factorization.

22222110222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18197170.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22222110222001 its reverse (10022201122222), we get a palindrome (32244311344223).

The spelling of 22222110222001 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-two thousand, one".