22012222100201 has 4 divisors (see below), whose sum is σ = 22012251348804. Its totient is φ = 22012192851600.

The previous prime is 22012222100191. The next prime is 22012222100203. The reversal of 22012222100201 is 10200122221022.

It is a happy number.

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 21658971366400 + 353250733801 = 4653920^2 + 594349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012222100201 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 22012222100201.

It is not an unprimeable number, because it can be changed into a prime (22012222100203) 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, 13464770 + ... + 15010811.

It is an arithmetic number, because the mean of its divisors is an integer number (5503062837201).

Almost surely, 2^{22012222100201} is an apocalyptic number.

It is an amenable number.

22012222100201 is a deficient number, since it is larger than the sum of its proper divisors (29248603).

22012222100201 is an equidigital number, since it uses as much as digits as its factorization.

22012222100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29248602.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22012222100201 its reverse (10200122221022), we get a palindrome (32212344321223).

The spelling of 22012222100201 in words is "twenty-two trillion, twelve billion, two hundred twenty-two million, one hundred thousand, two hundred one".