22220122120201 has 4 divisors (see below), whose sum is σ = 22236448442004. Its totient is φ = 22203795798400.

The previous prime is 22220122120171. The next prime is 22220122120247. The reversal of 22220122120201 is 10202122102222.

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 13892944200976 + 8327177919225 = 3727324^2 + 2885685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22220122120201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22220122120271) 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, 8163158860 + ... + 8163161581.

It is an arithmetic number, because the mean of its divisors is an integer number (5559112110501).

Almost surely, 2^{22220122120201} is an apocalyptic number.

It is an amenable number.

22220122120201 is a deficient number, since it is larger than the sum of its proper divisors (16326321803).

22220122120201 is a wasteful number, since it uses less digits than its factorization.

22220122120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16326321802.

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

Adding to 22220122120201 its reverse (10202122102222), we get a palindrome (32422244222423).

The spelling of 22220122120201 in words is "twenty-two trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twenty thousand, two hundred one".