22211010110021 has 2 divisors, whose sum is σ = 22211010110022. Its totient is φ = 22211010110020.

The previous prime is 22211010109999. The next prime is 22211010110039. The reversal of 22211010110021 is 12001101011222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14603204959396 + 7607805150625 = 3821414^2 + 2758225^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211010110021 - 2³⁰ = 22209936368197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22211010109978 and 22211010110005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22211010110621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105505055010 + 11105505055011.

It is an arithmetic number, because the mean of its divisors is an integer number (11105505055011).

Almost surely, 2^{22211010110021} is an apocalyptic number.

It is an amenable number.

22211010110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211010110021 is an equidigital number, since it uses as much as digits as its factorization.

22211010110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22211010110021 its reverse (12001101011222), we get a palindrome (34212111121243).

The spelling of 22211010110021 in words is "twenty-two trillion, two hundred eleven billion, ten million, one hundred ten thousand, twenty-one".