22221021222001 has 16 divisors (see below), whose sum is σ = 25895122704000. Its totient is φ = 18673568172288.

The previous prime is 22221021221963. The next prime is 22221021222007. The reversal of 22221021222001 is 10022212012222.

It is a cyclic number.

It is not a de Polignac number, because 22221021222001 - 2⁹ = 22221021221489 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 22221021222001.

It is not an unprimeable number, because it can be changed into a prime (22221021222007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71969176 + ... + 72277273.

It is an arithmetic number, because the mean of its divisors is an integer number (1618445169000).

Almost surely, 2^{22221021222001} is an apocalyptic number.

It is an amenable number.

22221021222001 is a deficient number, since it is larger than the sum of its proper divisors (3674101481999).

22221021222001 is a wasteful number, since it uses less digits than its factorization.

22221021222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144246888.

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

Adding to 22221021222001 its reverse (10022212012222), we get a palindrome (32243233234223).

The spelling of 22221021222001 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, one".