22001022100121 has 8 divisors (see below), whose sum is σ = 22547469282624. Its totient is φ = 21456156531600.

The previous prime is 22001022100097. The next prime is 22001022100129. The reversal of 22001022100121 is 12100122010022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001022100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001022100096 and 22001022100105.

It is not an unprimeable number, because it can be changed into a prime (22001022100129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395375330 + ... + 395430971.

It is an arithmetic number, because the mean of its divisors is an integer number (2818433660328).

Almost surely, 2^{22001022100121} is an apocalyptic number.

It is an amenable number.

22001022100121 is a deficient number, since it is larger than the sum of its proper divisors (546447182503).

22001022100121 is an equidigital number, since it uses as much as digits as its factorization.

22001022100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790806991.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22001022100121 its reverse (12100122010022), we get a palindrome (34101144110143).

Subtracting from 22001022100121 its reverse (12100122010022), we obtain a palindrome (9900900090099).

The spelling of 22001022100121 in words is "twenty-two trillion, one billion, twenty-two million, one hundred thousand, one hundred twenty-one".