22101234121 has 2 divisors, whose sum is σ = 22101234122. Its totient is φ = 22101234120.

The previous prime is 22101234119. The next prime is 22101234143. The reversal of 22101234121 is 12143210122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20259536896 + 1841697225 = 142336^2 + 42915^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101234121 - 2¹ = 22101234119 is a prime.

Together with 22101234119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22101234191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050617060 + 11050617061.

It is an arithmetic number, because the mean of its divisors is an integer number (11050617061).

Almost surely, 2^22101234121 is an apocalyptic number.

It is an amenable number.

22101234121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101234121 is an equidigital number, since it uses as much as digits as its factorization.

22101234121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22101234121 its reverse (12143210122), we get a palindrome (34244444243).

The spelling of 22101234121 in words is "twenty-two billion, one hundred one million, two hundred thirty-four thousand, one hundred twenty-one".