22121002121117 has 4 divisors (see below), whose sum is σ = 22125685801920. Its totient is φ = 22116318440316.

The previous prime is 22121002121111. The next prime is 22121002121131. The reversal of 22121002121117 is 71112120012122.

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-22121002121117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22121002121092 and 22121002121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121002121111) 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, 2341833317 + ... + 2341842762.

It is an arithmetic number, because the mean of its divisors is an integer number (5531421450480).

Almost surely, 2^{22121002121117} is an apocalyptic number.

It is an amenable number.

22121002121117 is a deficient number, since it is larger than the sum of its proper divisors (4683680803).

22121002121117 is an equidigital number, since it uses as much as digits as its factorization.

22121002121117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683680802.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 22121002121117 its reverse (71112120012122), we get a palindrome (93233122133239).

The spelling of 22121002121117 in words is "twenty-two trillion, one hundred twenty-one billion, two million, one hundred twenty-one thousand, one hundred seventeen".