22112021221201 has 8 divisors (see below), whose sum is σ = 22668485982408. Its totient is φ = 21556372992000.

The previous prime is 22112021221181. The next prime is 22112021221231. The reversal of 22112021221201 is 10212212021122.

It can be written as a sum of positive squares in 4 ways, for example, as 350020140625 + 21762001080576 = 591625^2 + 4664976^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22112021221201 - 2²³ = 22112012832593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112021221231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204078160 + ... + 204186481.

It is an arithmetic number, because the mean of its divisors is an integer number (2833560747801).

Almost surely, 2^{22112021221201} is an apocalyptic number.

It is an amenable number.

22112021221201 is a deficient number, since it is larger than the sum of its proper divisors (556464761207).

22112021221201 is a wasteful number, since it uses less digits than its factorization.

22112021221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408266003.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22112021221201 its reverse (10212212021122), we get a palindrome (32324233242323).

The spelling of 22112021221201 in words is "twenty-two trillion, one hundred twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred one".