22000021222001 has 4 divisors (see below), whose sum is σ = 22309880675904. Its totient is φ = 21690161768100.

The previous prime is 22000021221823. The next prime is 22000021222043. The reversal of 22000021222001 is 10022212000022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000021222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000021222301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154929726845 + ... + 154929726986.

It is an arithmetic number, because the mean of its divisors is an integer number (5577470168976).

Almost surely, 2^{22000021222001} is an apocalyptic number.

It is an amenable number.

22000021222001 is a deficient number, since it is larger than the sum of its proper divisors (309859453903).

22000021222001 is an equidigital number, since it uses as much as digits as its factorization.

22000021222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309859453902.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22000021222001 its reverse (10022212000022), we get a palindrome (32022233222023).

The spelling of 22000021222001 in words is "twenty-two trillion, twenty-one million, two hundred twenty-two thousand, one".