1122100020221 has 2 divisors, whose sum is σ = 1122100020222. Its totient is φ = 1122100020220.

The previous prime is 1122100020157. The next prime is 1122100020229. The reversal of 1122100020221 is 1220200012211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 839486575225 + 282613444996 = 916235^2 + 531614^2 .

It is an emirp because it is prime and its reverse (1220200012211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122100020221 - 2⁶ = 1122100020157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122100020196 and 1122100020205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122100020229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561050010110 + 561050010111.

It is an arithmetic number, because the mean of its divisors is an integer number (561050010111).

Almost surely, 2^{1122100020221} is an apocalyptic number.

It is an amenable number.

1122100020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122100020221 is an equidigital number, since it uses as much as digits as its factorization.

1122100020221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1122100020221 its reverse (1220200012211), we get a palindrome (2342300032432).

The spelling of 1122100020221 in words is "one trillion, one hundred twenty-two billion, one hundred million, twenty thousand, two hundred twenty-one".